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Finding the Fourth Proportional to 8,757.43, 12,083.10 and 5,617.87

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Solution

The fourth proportional to 8,757.43, 12,083.10 and 5,617.87 is: 7,751.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,757.43 : 12,083.10 = 5,617.87 : x
  2. Step 2: Convert to fraction form
    8,757.43/12,083.10 = 5,617.87/x
  3. Step 3: Cross multiply
    8,757.43x = 12,083.10 × 5,617.87
  4. Step 4: Simplify right side
    8,757.43x = 67,881,285.00
  5. Step 5: Solve for x
    x = 67,881,285.00/8,757.43
  6. Step 6: Final answer
    x = 7,751.28

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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.