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Finding the Fourth Proportional to 8,951.15, 12,337.85 and 7,155.47

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Solution

The fourth proportional to 8,951.15, 12,337.85 and 7,155.47 is: 9,862.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,951.15 : 12,337.85 = 7,155.47 : x
  2. Step 2: Convert to fraction form
    8,951.15/12,337.85 = 7,155.47/x
  3. Step 3: Cross multiply
    8,951.15x = 12,337.85 × 7,155.47
  4. Step 4: Simplify right side
    8,951.15x = 88,283,124.02
  5. Step 5: Solve for x
    x = 88,283,124.02/8,951.15
  6. Step 6: Final answer
    x = 9,862.77

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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.