Home / 1,489.20-2,229.88-1,195.32

Finding the Fourth Proportional to 1,489.20, 2,229.88 and 1,195.32

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Solution

The fourth proportional to 1,489.20, 2,229.88 and 1,195.32 is: 1,789.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,489.20 : 2,229.88 = 1,195.32 : x
  2. Step 2: Convert to fraction form
    1,489.20/2,229.88 = 1,195.32/x
  3. Step 3: Cross multiply
    1,489.20x = 2,229.88 × 1,195.32
  4. Step 4: Simplify right side
    1,489.20x = 2,665,420.16
  5. Step 5: Solve for x
    x = 2,665,420.16/1,489.20
  6. Step 6: Final answer
    x = 1,789.83

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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.