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Finding the Fourth Proportional to 6,609.20, 9,910.42 and 3,490.88

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Solution

The fourth proportional to 6,609.20, 9,910.42 and 3,490.88 is: 5,234.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,609.20 : 9,910.42 = 3,490.88 : x
  2. Step 2: Convert to fraction form
    6,609.20/9,910.42 = 3,490.88/x
  3. Step 3: Cross multiply
    6,609.20x = 9,910.42 × 3,490.88
  4. Step 4: Simplify right side
    6,609.20x = 34,596,086.97
  5. Step 5: Solve for x
    x = 34,596,086.97/6,609.20
  6. Step 6: Final answer
    x = 5,234.53

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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.