Home / 3,901.80-5,851.82-1,127.85

Finding the Fourth Proportional to 3,901.80, 5,851.82 and 1,127.85

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Solution

The fourth proportional to 3,901.80, 5,851.82 and 1,127.85 is: 1,691.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,901.80 : 5,851.82 = 1,127.85 : x
  2. Step 2: Convert to fraction form
    3,901.80/5,851.82 = 1,127.85/x
  3. Step 3: Cross multiply
    3,901.80x = 5,851.82 × 1,127.85
  4. Step 4: Simplify right side
    3,901.80x = 6,599,978.01
  5. Step 5: Solve for x
    x = 6,599,978.01/3,901.80
  6. Step 6: Final answer
    x = 1,691.52

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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.