First answer
6/8
Double both numbers in 3/4.
A direct fraction answer
Two equivalent fractions for 3/4 are 6/8 and 9/12. All three fractions name the same three-quarter part of one whole.
Quick answer
3/4 = 6/8 = 9/12
3/4
6/8
9/12
Each bar ends at the same three-quarter point.
The short explanation
Use the same multiplication factor for the numerator and denominator. Multiplying by 2/2 gives one answer, 6/8. Multiplying by 3/3 gives another answer, 9/12.
First answer
6/8
Double both numbers in 3/4.
Second answer
9/12
Triple both numbers in 3/4.
Use the multiplication rule
The number you multiply by is a choice. What must stay the same is the multiplier used on the top and bottom of the fraction.
Multiply by 2
3/4 × 2/2 = 6/8
Every fourth is split into two equal eighths. Three shaded fourths become six shaded eighths.
Multiply by 3
3/4 × 3/3 = 9/12
Every fourth is split into three equal twelfths. Three shaded fourths become nine shaded twelfths.
Visual proof
Look at the end of the colored section, not just the number of pieces. Every fraction below shades exactly three quarters of the whole.
3/4
Same shaded endpoint
6/8
Same shaded endpoint
9/12
Same shaded endpoint
Check the answer
Cross-multiplication gives a fast check after you make a new fraction. Equal diagonal products mean the two fractions have the same value.
3 × 8 = 24
4 × 6 = 24
So 3/4 = 6/8.
3 × 12 = 36
4 × 9 = 36
So 3/4 = 9/12.
Common questions