Home / 1,331.94-1,839.20-1,272.54

Finding the Fourth Proportional to 1,331.94, 1,839.20 and 1,272.54

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Solution

The fourth proportional to 1,331.94, 1,839.20 and 1,272.54 is: 1,757.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331.94 : 1,839.20 = 1,272.54 : x
  2. Step 2: Convert to fraction form
    1,331.94/1,839.20 = 1,272.54/x
  3. Step 3: Cross multiply
    1,331.94x = 1,839.20 × 1,272.54
  4. Step 4: Simplify right side
    1,331.94x = 2,340,449.55
  5. Step 5: Solve for x
    x = 2,340,449.55/1,331.94
  6. Step 6: Final answer
    x = 1,757.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.