Home / 1,229.24-1,839.54-938.36

Finding the Fourth Proportional to 1,229.24, 1,839.54 and 938.36

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Solution

The fourth proportional to 1,229.24, 1,839.54 and 938.36 is: 1,404.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,229.24 : 1,839.54 = 938.36 : x
  2. Step 2: Convert to fraction form
    1,229.24/1,839.54 = 938.36/x
  3. Step 3: Cross multiply
    1,229.24x = 1,839.54 × 938.36
  4. Step 4: Simplify right side
    1,229.24x = 1,726,150.75
  5. Step 5: Solve for x
    x = 1,726,150.75/1,229.24
  6. Step 6: Final answer
    x = 1,404.24

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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.