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Finding the Fourth Proportional to 7,609.92, 11,419.03 and 3,449.61

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Solution

The fourth proportional to 7,609.92, 11,419.03 and 3,449.61 is: 5,176.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,609.92 : 11,419.03 = 3,449.61 : x
  2. Step 2: Convert to fraction form
    7,609.92/11,419.03 = 3,449.61/x
  3. Step 3: Cross multiply
    7,609.92x = 11,419.03 × 3,449.61
  4. Step 4: Simplify right side
    7,609.92x = 39,391,217.10
  5. Step 5: Solve for x
    x = 39,391,217.10/7,609.92
  6. Step 6: Final answer
    x = 5,176.30

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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.