Solving Proportions - Word Problems!

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.

Front

What is a ratio?

Back

A ratio is a comparison of two quantities, showing how many times one value contains or is contained within the other.

Front

If the ratio of red beads to blue beads is 3:4, how many blue beads are needed for 9 red beads?

Back

12 blue beads.

Front

What does it mean if two quantities are in a 1:1 ratio?

Back

It means that for every unit of one quantity, there is one unit of the other quantity.

Front

If there are 42 girls at a concert and the ratio of boys to girls is 1:1, how many boys are there?

Back

42 boys.

Front

What is the formula to find the total number of items in a ratio?

Back

Total = Sum of the parts of the ratio.

Front

If 3 out of every 8 skittles are yellow, how many yellow skittles are in a bag of 32 skittles?

Back

12 yellow skittles.

Front

What is the relationship between ratios and fractions?

Back

Ratios can be expressed as fractions, where the first quantity is the numerator and the second is the denominator.

Front

How do you find a missing value in a proportion?

Back

Set up the proportion, cross-multiply, and solve for the missing value.