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Finding the Fourth Proportional to 8,755.92, 12,083.18 and 5,612.11

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Solution

The fourth proportional to 8,755.92, 12,083.18 and 5,612.11 is: 7,744.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,755.92 : 12,083.18 = 5,612.11 : x
  2. Step 2: Convert to fraction form
    8,755.92/12,083.18 = 5,612.11/x
  3. Step 3: Cross multiply
    8,755.92x = 12,083.18 × 5,612.11
  4. Step 4: Simplify right side
    8,755.92x = 67,812,077.04
  5. Step 5: Solve for x
    x = 67,812,077.04/8,755.92
  6. Step 6: Final answer
    x = 7,744.71

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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.