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Finding the Fourth Proportional to 8,951.76, 12,353.96 and 4,972.88

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Solution

The fourth proportional to 8,951.76, 12,353.96 and 4,972.88 is: 6,862.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,951.76 : 12,353.96 = 4,972.88 : x
  2. Step 2: Convert to fraction form
    8,951.76/12,353.96 = 4,972.88/x
  3. Step 3: Cross multiply
    8,951.76x = 12,353.96 × 4,972.88
  4. Step 4: Simplify right side
    8,951.76x = 61,434,760.60
  5. Step 5: Solve for x
    x = 61,434,760.60/8,951.76
  6. Step 6: Final answer
    x = 6,862.87

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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.