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Finding the Fourth Proportional to 2,691.53, 4,039.72 and 1,132.68

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Solution

The fourth proportional to 2,691.53, 4,039.72 and 1,132.68 is: 1,700.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,691.53 : 4,039.72 = 1,132.68 : x
  2. Step 2: Convert to fraction form
    2,691.53/4,039.72 = 1,132.68/x
  3. Step 3: Cross multiply
    2,691.53x = 4,039.72 × 1,132.68
  4. Step 4: Simplify right side
    2,691.53x = 4,575,728.74
  5. Step 5: Solve for x
    x = 4,575,728.74/2,691.53
  6. Step 6: Final answer
    x = 1,700.05

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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.