Solving Proportions

Front

What is a proportion?

Back

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

Front

If 15 scoops of lemonade mix make 5 gallons, how many gallons will 6 scoops make?

Back

2 gallons

Front

What is the formula to find a missing value in a proportion?

Back

Cross-multiply the ratios and set them equal to each other.

Front

True or False: The ratios 1/2 and 2/4 are proportional.

Back

True

Front

What does it mean for two ratios to be equivalent?

Back

It means they represent the same relationship or value.

Front

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

Back

The ratio of flour to sugar is 3:2.

Front

How can you check if two ratios are proportional?

Back

You can cross-multiply and see if the products are equal.

Front

What is the first step in solving a proportion problem?

Back

Identify the known and unknown values.

Front

If 4 apples cost $2, how much do 10 apples cost?

Back

$5 (Set up the proportion: 4/2 = 10/x, then solve for x).

Front

What is a unit rate?

Back

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