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Finding the Fourth Proportional to 8,951.81, 12,353.92 and 4,972.95

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Solution

The fourth proportional to 8,951.81, 12,353.92 and 4,972.95 is: 6,862.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,951.81 : 12,353.92 = 4,972.95 : x
  2. Step 2: Convert to fraction form
    8,951.81/12,353.92 = 4,972.95/x
  3. Step 3: Cross multiply
    8,951.81x = 12,353.92 × 4,972.95
  4. Step 4: Simplify right side
    8,951.81x = 61,435,414.03
  5. Step 5: Solve for x
    x = 61,435,414.03/8,951.81
  6. Step 6: Final answer
    x = 6,862.91

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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.