To find the fraction of the blanket that is yellow, we first need to determine how much of the blanket has already been made with the green and blue colors.
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Convert \( \frac{1}{4} \) to eighths: \[ \frac{1}{4} = \frac{2}{8} \]
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Add the fractions for green and blue: \[ \text{Green} + \text{Blue} = \frac{3}{8} + \frac{2}{8} = \frac{5}{8} \]
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Determine the fraction that represents the yellow part: \[ \text{Yellow} = 1 - \left(\text{Green} + \text{Blue}\right) = 1 - \frac{5}{8} \]
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Convert 1 to eighths: \[ 1 = \frac{8}{8} \]
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Perform the subtraction: \[ \text{Yellow} = \frac{8}{8} - \frac{5}{8} = \frac{3}{8} \]
Thus, the fraction that represents the yellow part of the blanket is \( \frac{3}{8} \).
The answer is 3 eighths.