Home / 3,621.20-5,432.40-1,542.20

Finding the Fourth Proportional to 3,621.20, 5,432.40 and 1,542.20

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Solution

The fourth proportional to 3,621.20, 5,432.40 and 1,542.20 is: 2,313.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,621.20 : 5,432.40 = 1,542.20 : x
  2. Step 2: Convert to fraction form
    3,621.20/5,432.40 = 1,542.20/x
  3. Step 3: Cross multiply
    3,621.20x = 5,432.40 × 1,542.20
  4. Step 4: Simplify right side
    3,621.20x = 8,377,847.28
  5. Step 5: Solve for x
    x = 8,377,847.28/3,621.20
  6. Step 6: Final answer
    x = 2,313.56

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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.