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Finding the Fourth Proportional to 2,691.65, 4,037.47 and 743.85

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Solution

The fourth proportional to 2,691.65, 4,037.47 and 743.85 is: 1,115.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,691.65 : 4,037.47 = 743.85 : x
  2. Step 2: Convert to fraction form
    2,691.65/4,037.47 = 743.85/x
  3. Step 3: Cross multiply
    2,691.65x = 4,037.47 × 743.85
  4. Step 4: Simplify right side
    2,691.65x = 3,003,248.15
  5. Step 5: Solve for x
    x = 3,003,248.15/2,691.65
  6. Step 6: Final answer
    x = 1,115.77

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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.