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Finding the Fourth Proportional to 8,386.52, 12,502.66 and 7,992.92

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Solution

The fourth proportional to 8,386.52, 12,502.66 and 7,992.92 is: 11,915.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,386.52 : 12,502.66 = 7,992.92 : x
  2. Step 2: Convert to fraction form
    8,386.52/12,502.66 = 7,992.92/x
  3. Step 3: Cross multiply
    8,386.52x = 12,502.66 × 7,992.92
  4. Step 4: Simplify right side
    8,386.52x = 99,932,761.17
  5. Step 5: Solve for x
    x = 99,932,761.17/8,386.52
  6. Step 6: Final answer
    x = 11,915.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.