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Finding the Fourth Proportional to 8,657.72, 12,981.96 and 4,493.54

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Solution

The fourth proportional to 8,657.72, 12,981.96 and 4,493.54 is: 6,737.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,657.72 : 12,981.96 = 4,493.54 : x
  2. Step 2: Convert to fraction form
    8,657.72/12,981.96 = 4,493.54/x
  3. Step 3: Cross multiply
    8,657.72x = 12,981.96 × 4,493.54
  4. Step 4: Simplify right side
    8,657.72x = 58,334,891.63
  5. Step 5: Solve for x
    x = 58,334,891.63/8,657.72
  6. Step 6: Final answer
    x = 6,737.91

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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.