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Finding the Fourth Proportional to 8,738.11, 13,107.11 and 5,229.10

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Solution

The fourth proportional to 8,738.11, 13,107.11 and 5,229.10 is: 7,843.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,738.11 : 13,107.11 = 5,229.10 : x
  2. Step 2: Convert to fraction form
    8,738.11/13,107.11 = 5,229.10/x
  3. Step 3: Cross multiply
    8,738.11x = 13,107.11 × 5,229.10
  4. Step 4: Simplify right side
    8,738.11x = 68,538,388.90
  5. Step 5: Solve for x
    x = 68,538,388.90/8,738.11
  6. Step 6: Final answer
    x = 7,843.62

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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.