Answer: 3/32
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Step-by-step explanation:
Draw 4 rectangles side by side. Shading 3 out of the 4 will represent the fraction 3/4.
Now draw 7 horizontal lines so that you split each rectangle into 8 equal pieces. Notice we have 8*4 = 32 smaller rectangles at this point. This is because we have a grid of 4 across the top and 8 along the side.
Of the sub-divided shaded rectangles, only select 1 small piece (ie 1/8 of the shaded rectangle). You should select 3 smaller pieces that are shaded. Since this is out of 32 pieces total, this is how we get to 3/32
See the diagrams below.