Intro to proportions

Front

What is a proportion?

Back

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

Front

How do you solve a proportion?

Back

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

Front

What does it mean for two fractions to be equivalent?

Back

Two fractions are equivalent if they represent the same value or proportion, even if they have different numerators and denominators.

Front

If 4/5 = x/20, what is x?

Back

x = 16.

Front

Caleb can drive 15 miles in 1 hour. How many miles can he drive in 3 hours?

Back

45 miles.

Front

If a recipe requires 2 cups of flour for 4 servings, how much flour is needed for 10 servings?

Back

5 cups of flour.

Front

What is the cross-multiplication method?

Back

Cross-multiplication involves multiplying the numerator of one fraction by the denominator of the other fraction to find a solution.

Front

If 3/4 = x/12, what is x?

Back

x = 9.

Front

Daniel bought 1 star fruit for $2. How much would 5 star fruits cost?

Back

$10.

Front

What is the formula for finding a missing value in a proportion?

Back

If a/b = c/d, then ad = bc.