Technically any two numbers in a ratio that are divisible by the other ratio numbers make them equivalent.
For instance,
[tex]3:6[/tex]
[tex]6:12[/tex]
[tex]Equivalent.[/tex]
Because...
[tex]\frac{3 * 2 = 6}{6 * 2 = 12}[/tex]
Or...
[tex]\frac{3}{6} = \frac{6}{12}[/tex]
The equation above represents, "Divide 3 by 6 and divide 6 by 12". From both equations to here, you now know what to multiply the numbers by to get your answer.
From here, multiply 3 by 2, and, 6 by 2, to get the equivalent ratio, 6:12.
Therefore, 6:7 and 24:28 are equal as 6:7 and 24:28 are, too.
