Home / 3,517.92-5,272.56-2,129.04

Finding the Fourth Proportional to 3,517.92, 5,272.56 and 2,129.04

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Solution

The fourth proportional to 3,517.92, 5,272.56 and 2,129.04 is: 3,190.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,517.92 : 5,272.56 = 2,129.04 : x
  2. Step 2: Convert to fraction form
    3,517.92/5,272.56 = 2,129.04/x
  3. Step 3: Cross multiply
    3,517.92x = 5,272.56 × 2,129.04
  4. Step 4: Simplify right side
    3,517.92x = 11,225,491.14
  5. Step 5: Solve for x
    x = 11,225,491.14/3,517.92
  6. Step 6: Final answer
    x = 3,190.95

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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.