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Finding the Fourth Proportional to 3,640.95, 5,458.64 and 1,691.73

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Solution

The fourth proportional to 3,640.95, 5,458.64 and 1,691.73 is: 2,536.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,640.95 : 5,458.64 = 1,691.73 : x
  2. Step 2: Convert to fraction form
    3,640.95/5,458.64 = 1,691.73/x
  3. Step 3: Cross multiply
    3,640.95x = 5,458.64 × 1,691.73
  4. Step 4: Simplify right side
    3,640.95x = 9,234,536.59
  5. Step 5: Solve for x
    x = 9,234,536.59/3,640.95
  6. Step 6: Final answer
    x = 2,536.30

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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.