Finding the Fourth Proportional to 10,653.21, 15,979.68 and 3,257.91
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Solution
The fourth proportional to 10,653.21, 15,979.68 and 3,257.91 is: 4,886.82
Step by Step Solution
- Step 1: Write the proportion equation
10,653.21 : 15,979.68 = 3,257.91 : x - Step 2: Convert to fraction form
10,653.21/15,979.68 = 3,257.91/x - Step 3: Cross multiply
10,653.21x = 15,979.68 × 3,257.91 - Step 4: Simplify right side
10,653.21x = 52,060,359.27 - Step 5: Solve for x
x = 52,060,359.27/10,653.21 - Step 6: Final answer
x = 4,886.82
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.