Home / 3,121.52-4,306.20-1,943.96

Finding the Fourth Proportional to 3,121.52, 4,306.20 and 1,943.96

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Solution

The fourth proportional to 3,121.52, 4,306.20 and 1,943.96 is: 2,681.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.52 : 4,306.20 = 1,943.96 : x
  2. Step 2: Convert to fraction form
    3,121.52/4,306.20 = 1,943.96/x
  3. Step 3: Cross multiply
    3,121.52x = 4,306.20 × 1,943.96
  4. Step 4: Simplify right side
    3,121.52x = 8,371,080.55
  5. Step 5: Solve for x
    x = 8,371,080.55/3,121.52
  6. Step 6: Final answer
    x = 2,681.73

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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.