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Finding the Fourth Proportional to 9,175.52, 12,663.28 and 8,612.54

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Solution

The fourth proportional to 9,175.52, 12,663.28 and 8,612.54 is: 11,886.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,175.52 : 12,663.28 = 8,612.54 : x
  2. Step 2: Convert to fraction form
    9,175.52/12,663.28 = 8,612.54/x
  3. Step 3: Cross multiply
    9,175.52x = 12,663.28 × 8,612.54
  4. Step 4: Simplify right side
    9,175.52x = 109,063,005.53
  5. Step 5: Solve for x
    x = 109,063,005.53/9,175.52
  6. Step 6: Final answer
    x = 11,886.30

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.