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Mathematics · Grades 3–4

Proportion

noun

A statement that two ratios or fractions are equal.

Example Sentences

"The proportion 1/2 = 3/6 shows that both ratios are equivalent."

"Recipes use proportion to scale ingredients for more or fewer servings."

Synonyms & Related Terms

ratioequalityrelationship

Quick Check

Which best describes the meaning of proportion?

Study Tips

To remember proportion, try writing it in a sentence of your own. Connect it to something you already know about mathematics.

Use it in conversation today — saying a word aloud three times helps lock it into long-term memory.