What comes after 3/4 on the number line

So we are looking for a fraction $x$ such that $\frac{6}{8} < x < \frac{8}{8}$.

• $\frac{1}{3}$: This is approximately 0.333, which is less than $\frac{3}{4}$ (0.75).
• $\frac{7}{8}$: This is 0.875. Comparing with $\frac{3}{4} = \frac{6}{8}$: $$\frac{6}{8} < \frac{7}{8}$$ Comparing with $1 = \frac{8}{8}$: $$\frac{7}{8} < \frac{8}{8}$$ So, $\frac{7}{8}$ fits the condition $\frac{3}{4} < \frac{7}{8} < 1$.
• $\frac{1}{4}$: This is $\frac{2}{8}$, which is less than $\frac{3}{4}$.
• $\frac{1}{5}$: This is 0.2, which is less than $\frac{3}{4}$.
• $\frac{6}{8}$: This fraction is equal to $\frac{3}{4}$, not after it.

From the comparison, $\frac{7}{8}$ is the only fraction from the list that is greater than $\frac{3}{4}$ and less than 1.

The fraction that comes after $\frac{3}{4}$ on the number line is $\boxed{\frac{7}{8}}$.