Equivalent Ratios | MathHelp.com - By MathHelp.com
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| 00:0-1 | two ratios are equal if the fractions representing them are | |
| 00:03 | equal . So to determine whether the ratios 9 to | |
| 00:06 | 12 and 21 to 28 are equal , let's first | |
| 00:10 | rewrite the ratio 9 to 12 as the fraction 9/12 | |
| 00:16 | . Now we have fractions representing both of our ratios | |
| 00:20 | 9/12 and 21/28 . To determine whether these fractions are | |
| 00:27 | equal , we write each fraction in lowest terms , | |
| 00:30 | so dividing the numerator and denominator of 9/12 by three | |
| 00:35 | , We get the equivalent fraction 3/4 which is in | |
| 00:39 | lowest terms , and dividing the numerator and denominator of | |
| 00:43 | 21/28 by seven , we get the equivalent fraction 3/4 | |
| 00:49 | which is in lowest terms Since 3/4 equals 3/4 . | |
| 00:54 | We know that the ratios 9-12 and 21-28 must be | |
| 00:59 | equal . |
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