Home / 3,839.52-5,761.44-1,869.78

Finding the Fourth Proportional to 3,839.52, 5,761.44 and 1,869.78

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Solution

The fourth proportional to 3,839.52, 5,761.44 and 1,869.78 is: 2,805.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,839.52 : 5,761.44 = 1,869.78 : x
  2. Step 2: Convert to fraction form
    3,839.52/5,761.44 = 1,869.78/x
  3. Step 3: Cross multiply
    3,839.52x = 5,761.44 × 1,869.78
  4. Step 4: Simplify right side
    3,839.52x = 10,772,625.28
  5. Step 5: Solve for x
    x = 10,772,625.28/3,839.52
  6. Step 6: Final answer
    x = 2,805.72

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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.