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Finding the Fourth Proportional to 2,691.57, 4,035.47 and 936.17

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Solution

The fourth proportional to 2,691.57, 4,035.47 and 936.17 is: 1,403.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,691.57 : 4,035.47 = 936.17 : x
  2. Step 2: Convert to fraction form
    2,691.57/4,035.47 = 936.17/x
  3. Step 3: Cross multiply
    2,691.57x = 4,035.47 × 936.17
  4. Step 4: Simplify right side
    2,691.57x = 3,777,861.09
  5. Step 5: Solve for x
    x = 3,777,861.09/2,691.57
  6. Step 6: Final answer
    x = 1,403.59

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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.