easy
The equation 2/3 = 4/6 is a true proportion.
What does Proportion mean?
In math, a proportion is an equation showing that two ratios are equal.
Dictionary definition
An equation stating that two ratios are equal; proportion can also mean a part or share of a whole, relative size, or balanced relationship among parts.
Example sentences
Proportion in a sentence
medium
The recipe stays in proportion when every ingredient amount is doubled.
hard
A large proportion of the survey group selected the first option.
Writing practice
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Quick practice
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Practice the meaning of Proportion
Answer three quick questions about its meaning and related words.
Question 1 of 3
Practice 1
Which equation is a true proportion?
Both ratios have the same value, so the equation is a true proportion.
Practice 2
If 3 notebooks cost $6 at a constant rate, how much do 6 notebooks cost?
Doubling the notebook quantity doubles the cost, preserving the ratio.
Practice 3
Which relationship is proportional?
A proportional relationship has a constant ratio y/x and passes through the origin.
Practice complete
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Pronunciation coach
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Proportion
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Sounds like
pruh · por · shun · strongest beat: por
Tap each sound part, then blend the whole word together.
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WordProportion.
Partnoun.
MeaningProportion means In math, a proportion is an equation showing that two ratios are equal.
ExampleExample: The equation 2/3 = 4/6 is a true proportion.
Word breakdown
3 syllables. Say each part, then blend the word.
- Syllables
- pruh · por · shun
- Strongest beat
- por
- Ending
- shun
- Tip
- Put a little extra energy on por.
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Synonyms
Words like Proportion
Antonym review
Does Proportion have an opposite?
Proportion has ratio-equation, share, relative-size, and balance senses but no direct antonym across them. Disproportion contrasts with balanced relative size in one sense, while whole is the reference for a share rather than an opposite.
Synonym practice
Want to practice proportion synonyms in context? Try a Synonym Search question like "A large proportion of the class chose soccer," then compare close word choices. Practice proportion synonyms.
Word family
Proportion word family
Base word
proportion
noun
proportions
More than one ratio equation, relative amount, or size relationship.
adjective
proportional
Having equivalent ratios or matching relative size.
adverb
proportionally
In a way that preserves a proportional relationship.
adjective
disproportionate
Too large or small in relation to something else.
Related words
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Student support
Understand Proportion
Hint for students
A mathematical proportion says two ratios are equal. In y = kx, the ratio y/x stays constant.
Common mix-up
Two quantities increasing together does not guarantee proportionality. A proportional graph passes through the origin and has a constant multiplicative relationship.
Try it in class or at home
Scale a recipe by factors of 2, 3, and 1/2. Write a proportion for each version and explain which ratio remains constant.
Teacher prompt
Compare tables for y = 3x and y = 3x + 2. Ask students to test y/x, graph both, and decide which relationship is proportional.
Word Wheel · Grades 6+
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