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Finding the Fourth Proportional to 8,981.73, 12,384.87 and 6,149.57

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Solution

The fourth proportional to 8,981.73, 12,384.87 and 6,149.57 is: 8,479.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,981.73 : 12,384.87 = 6,149.57 : x
  2. Step 2: Convert to fraction form
    8,981.73/12,384.87 = 6,149.57/x
  3. Step 3: Cross multiply
    8,981.73x = 12,384.87 × 6,149.57
  4. Step 4: Simplify right side
    8,981.73x = 76,161,625.01
  5. Step 5: Solve for x
    x = 76,161,625.01/8,981.73
  6. Step 6: Final answer
    x = 8,479.62

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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.