Home / 6,469.20-9,691.38-3,687.66

Finding the Fourth Proportional to 6,469.20, 9,691.38 and 3,687.66

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Solution

The fourth proportional to 6,469.20, 9,691.38 and 3,687.66 is: 5,524.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,469.20 : 9,691.38 = 3,687.66 : x
  2. Step 2: Convert to fraction form
    6,469.20/9,691.38 = 3,687.66/x
  3. Step 3: Cross multiply
    6,469.20x = 9,691.38 × 3,687.66
  4. Step 4: Simplify right side
    6,469.20x = 35,738,514.37
  5. Step 5: Solve for x
    x = 35,738,514.37/6,469.20
  6. Step 6: Final answer
    x = 5,524.41

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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.