Math Tutoring on Proportions
Proportion is a mathematical statement that two ratios or two rates are equal. If are two equal ratios, then is a Proportion.
If two fractions are equal, then the cross products are equal. If cross products are equal, then the fractions are equal.
Procedure to solve for a missing number in a Proportion:
1. Find the cross products and form an equation.
2. Solve the equation.
3. Check the answer.
Unit Scale is a ratio that compares the dimensions of a scaled object to the actual dimensions of an object.
Scale Factor is a ratio comparing the scaled measurement to the actual measurement. Scale Factor is similar to a Unit Scale except no units are given.
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1. What are Proportions?
2. How do you find a missing number in a Proportion?
3. What are Unit Scale and Scale Factor?
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