Solve Proportions

Front

What is a proportional relationship?

Back

A proportional relationship is one where two quantities maintain a constant ratio or rate. For example, if y is proportional to x, then y = kx for some constant k.

Tags

CCSS.7.RP.A.2A

Front

How do you determine if a table of values is proportional?

Back

A table of values is proportional if the ratio of the corresponding values is constant across all pairs.

Tags

CCSS.7.RP.A.2A

Front

What is the cross-multiplication method used for?

Back

Cross-multiplication is used to solve proportions by multiplying the numerator of one fraction by the denominator of the other and setting the two products equal.

Front

Back

x = 1

Tags

CCSS.7.RP.A.3

Front

If 5 out of 15 students are girls, what is the proportion of girls?

Back

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

How do you find a missing value in a proportion?

Back

To find a missing value in a proportion, set up the equation using cross-multiplication and solve for the unknown.

Tags

CCSS.7.RP.A.2C

Front

What is the formula for finding the total number of items in a proportional relationship?

Back

If a part-to-whole ratio is known, the total can be found using the formula: Total = Part / (Part Ratio).

Tags

CCSS.7.RP.A.2C

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Back

y = 4.

Tags

CCSS.5.NF.B.5B

Front

If a recipe calls for 2 cups of flour for every 3 cups of sugar, what is the ratio of flour to sugar?

Back

The ratio of flour to sugar is 2:3.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What does it mean if two ratios are equivalent?

Back

Two ratios are equivalent if they represent the same relationship between quantities, meaning they simplify to the same fraction.

Tags

CCSS.6.RP.A.3A