Home / 3,882.20-5,819.78-1,572.12

Finding the Fourth Proportional to 3,882.20, 5,819.78 and 1,572.12

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Solution

The fourth proportional to 3,882.20, 5,819.78 and 1,572.12 is: 2,356.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,882.20 : 5,819.78 = 1,572.12 : x
  2. Step 2: Convert to fraction form
    3,882.20/5,819.78 = 1,572.12/x
  3. Step 3: Cross multiply
    3,882.20x = 5,819.78 × 1,572.12
  4. Step 4: Simplify right side
    3,882.20x = 9,149,392.53
  5. Step 5: Solve for x
    x = 9,149,392.53/3,882.20
  6. Step 6: Final answer
    x = 2,356.75

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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.