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Finding the Fourth Proportional to 3,691.91, 5,538.92 and 1,502.21

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Solution

The fourth proportional to 3,691.91, 5,538.92 and 1,502.21 is: 2,253.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,691.91 : 5,538.92 = 1,502.21 : x
  2. Step 2: Convert to fraction form
    3,691.91/5,538.92 = 1,502.21/x
  3. Step 3: Cross multiply
    3,691.91x = 5,538.92 × 1,502.21
  4. Step 4: Simplify right side
    3,691.91x = 8,320,627.35
  5. Step 5: Solve for x
    x = 8,320,627.35/3,691.91
  6. Step 6: Final answer
    x = 2,253.74

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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.