Proportions and Cross Multiplication Quiz

What is a proportion in mathematics?

• An equation stating two ratios are equal

• A method to solve quadratic equations

• A type of geometric shape

• A way to calculate percentages

When solving proportions, why is it helpful to write ratios as fractions?

• Fractions simplify the process of cross-multiplication

• Fractions are more accurate

• Fractions eliminate the need for variables

• Fractions are easier to visualize

In the first example, what is the value of x when 13/28 equals x/252?

• x = 117

• x = 100

• x = 150

• x = 130

What is the result of solving the proportion 17/85 = x/5?

• x = 1

• x = 4

• x = 2

• x = 3

In the complex proportion problem, what is the final value of x when solving 12(3x - 2) = 2(10x + 12)?

• x = 1

• x = 4

• x = 2

• x = 3