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Finding the Fourth Proportional to 8,516.97, 12,754.04 and 5,387.49

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Solution

The fourth proportional to 8,516.97, 12,754.04 and 5,387.49 is: 8,067.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,516.97 : 12,754.04 = 5,387.49 : x
  2. Step 2: Convert to fraction form
    8,516.97/12,754.04 = 5,387.49/x
  3. Step 3: Cross multiply
    8,516.97x = 12,754.04 × 5,387.49
  4. Step 4: Simplify right side
    8,516.97x = 68,712,236.02
  5. Step 5: Solve for x
    x = 68,712,236.02/8,516.97
  6. Step 6: Final answer
    x = 8,067.69

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1.5x scale

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.