Home / 2,489.55-3,726.33-1,317.90

Finding the Fourth Proportional to 2,489.55, 3,726.33 and 1,317.90

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Solution

The fourth proportional to 2,489.55, 3,726.33 and 1,317.90 is: 1,972.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,489.55 : 3,726.33 = 1,317.90 : x
  2. Step 2: Convert to fraction form
    2,489.55/3,726.33 = 1,317.90/x
  3. Step 3: Cross multiply
    2,489.55x = 3,726.33 × 1,317.90
  4. Step 4: Simplify right side
    2,489.55x = 4,910,930.31
  5. Step 5: Solve for x
    x = 4,910,930.31/2,489.55
  6. Step 6: Final answer
    x = 1,972.62

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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.