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Finding the Fourth Proportional to 8,517.97, 12,755.53 and 5,388.49

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Solution

The fourth proportional to 8,517.97, 12,755.53 and 5,388.49 is: 8,069.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,517.97 : 12,755.53 = 5,388.49 : x
  2. Step 2: Convert to fraction form
    8,517.97/12,755.53 = 5,388.49/x
  3. Step 3: Cross multiply
    8,517.97x = 12,755.53 × 5,388.49
  4. Step 4: Simplify right side
    8,517.97x = 68,733,045.85
  5. Step 5: Solve for x
    x = 68,733,045.85/8,517.97
  6. Step 6: Final answer
    x = 8,069.18

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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.