Home / 3,589.20-5,385.65-1,398.56

Finding the Fourth Proportional to 3,589.20, 5,385.65 and 1,398.56

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Solution

The fourth proportional to 3,589.20, 5,385.65 and 1,398.56 is: 2,098.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,589.20 : 5,385.65 = 1,398.56 : x
  2. Step 2: Convert to fraction form
    3,589.20/5,385.65 = 1,398.56/x
  3. Step 3: Cross multiply
    3,589.20x = 5,385.65 × 1,398.56
  4. Step 4: Simplify right side
    3,589.20x = 7,532,120.74
  5. Step 5: Solve for x
    x = 7,532,120.74/3,589.20
  6. Step 6: Final answer
    x = 2,098.55

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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.