proportions

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What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

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CCSS.7.RP.A.2A

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How do you solve a proportion?

Back

To solve a proportion, cross-multiply the terms and then solve for the variable.

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CCSS.7.RP.A.2C

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What does cross-multiplication mean?

Back

Cross-multiplication involves multiplying the numerator of one ratio by the denominator of the other ratio.

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CCSS.6.RP.A.3A

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Back

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CCSS.4.NF.A.1

CCSS.5.NF.B.5B

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Back

x = 35.

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CCSS.3.NF.A.3A

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

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Back

x = 5.

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CCSS.7.RP.A.2C

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k = 5.

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CCSS.7.RP.A.2B

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Back

x = 26.

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CCSS.4.OA.A.3

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Back

x = 28.

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CCSS.7.RP.A.3

Front

What is the first step in solving a proportion?

Back

The first step is to set the two ratios equal to each other.

Tags

CCSS.7.RP.A.3