Solving Proportions

Front

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

Front

How do you solve a proportion?

Back

To solve a proportion, cross-multiply the two ratios and then solve for the unknown variable.

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CCSS.7.RP.A.2C

Front

What is cross-multiplication in proportions?

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

Front

If a/b = c/d, what is the cross-multiplication equation?

Back

The cross-multiplication equation is a * d = b * c.

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CCSS.5.NF.B.5B

Front

What is the first step in solving the proportion 3/x = 6/12?

Back

The first step is to cross-multiply: 3 * 12 = 6 * x.

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CCSS.7.RP.A.2C

Front

What is the value of x in the proportion 3/x = 6/12?

Back

x = 6.

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CCSS.7.RP.A.2C

Front

What does it mean if two ratios are equivalent?

Back

If two ratios are equivalent, they represent the same relationship between quantities.

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CCSS.6.RP.A.3A

Front

How can proportions be used in real-life applications?

Back

Proportions can be used in various real-life applications such as cooking, scaling models, and financial calculations.

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CCSS.7.RP.A.3

Front

What is a unit rate?

Back

A unit rate is a ratio that compares a quantity to one unit of another quantity.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

How do you find a unit rate from a proportion?

Back

To find a unit rate, divide both terms of the ratio by the denominator.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2