I assume you are talking about equivalent *to another ratio*. Equivalence means that two (or more) things mean pretty much the same thing. For ratios to be equivalent, that would mean that when they are reduced (by factoring out any common multiples of the numerator [top part] and denominator [bottom part]) they become the same ratio.
Case in point:
1/2 is equivalent to 2/4 (which is 1/2 when you factor out a 2 from the numerator and denominator.) 1/3 is equivalent to 3/9 (which is also 1/3 when you factor out the 3 from the numerator and denominator.)
Find an equivalent ratio to 3/5.
multiply by 2
If you have one ratio then multiply both numbers of the ratio, x:y (or x/y), by any non-zero number. You will have an equivalent ratio.
2 and 4 is one of them
Pick any non-zero integer, n. Then A*n and B*n are an equivalent ratio.
Find an equivalent ratio to 3/5.
Find an equivalent ratio to 32:24 such that tje first number in the ratio is 4
multiply by 2
If you have one ratio then multiply both numbers of the ratio, x:y (or x/y), by any non-zero number. You will have an equivalent ratio.
To find a ratio equivalent to 8 to 9, we need to find a common multiplier to scale both numbers. In this case, we can multiply both 8 and 9 by 2 to get 16 to 18, which is equivalent to 8 to 9. Therefore, the ratio equivalent to 8 to 9 is 16 to 18.
2 and 4 is one of them
That is necessary if trying to find an equivalent ratio: not otherwise.
Find an equivalent ratio so that the denominator = 1. This may require the numerator to be a fraction.
Pick any non-zero integer, n. Then A*n and B*n are an equivalent ratio.
1130/930 is an equivalent ratio.
912/1 is one equivalent ratio.
The equivalent ratio is: 22 to 6