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Finding the Fourth Proportional to 8,906.88, 13,359.98 and 4,229.12

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Solution

The fourth proportional to 8,906.88, 13,359.98 and 4,229.12 is: 6,343.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,906.88 : 13,359.98 = 4,229.12 : x
  2. Step 2: Convert to fraction form
    8,906.88/13,359.98 = 4,229.12/x
  3. Step 3: Cross multiply
    8,906.88x = 13,359.98 × 4,229.12
  4. Step 4: Simplify right side
    8,906.88x = 56,500,958.62
  5. Step 5: Solve for x
    x = 56,500,958.62/8,906.88
  6. Step 6: Final answer
    x = 6,343.52

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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.