SOL 7.3 Basic Proportions Flashcardizz

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 isolate the variable.

Front

What does cross-multiplication involve?

Back

Cross-multiplication involves multiplying the numerator of one ratio by the denominator of the other ratio.

Front

If a/b = c/d, what is the cross-multiplication result?

Back

The result is a*d = b*c.

Front

What is the first step in solving the proportion 3/4 = x/12?

Back

The first step is to cross-multiply: 3 * 12 = 4 * x.

Front

What is the solution to the proportion 3/4 = x/12?

Back

x = 9.

Front

What is a ratio?

Back

A ratio is a comparison of two quantities, showing the relative size of one quantity to another.

Front

How can you express a ratio?

Back

A ratio can be expressed in three ways: as a fraction, with a colon (e.g., 3:4), or in words (e.g., '3 to 4').

Front

What is the relationship between ratios and proportions?

Back

Ratios are used to form proportions, which compare two ratios to show equality.

Front

What is an example of a real-world application of proportions?

Back

Proportions can be used in recipes to adjust ingredient amounts based on serving size.