Home / 3,939.20-5,436-2,541.95

Finding the Fourth Proportional to 3,939.20, 5,436 and 2,541.95

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Solution

The fourth proportional to 3,939.20, 5,436 and 2,541.95 is: 3,507.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.20 : 5,436 = 2,541.95 : x
  2. Step 2: Convert to fraction form
    3,939.20/5,436 = 2,541.95/x
  3. Step 3: Cross multiply
    3,939.20x = 5,436 × 2,541.95
  4. Step 4: Simplify right side
    3,939.20x = 13,818,013.02
  5. Step 5: Solve for x
    x = 13,818,013.02/3,939.20
  6. Step 6: Final answer
    x = 3,507.83

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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.