Home / 3,689.12-5,555.16-2,721.98

Finding the Fourth Proportional to 3,689.12, 5,555.16 and 2,721.98

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Solution

The fourth proportional to 3,689.12, 5,555.16 and 2,721.98 is: 4,098.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,689.12 : 5,555.16 = 2,721.98 : x
  2. Step 2: Convert to fraction form
    3,689.12/5,555.16 = 2,721.98/x
  3. Step 3: Cross multiply
    3,689.12x = 5,555.16 × 2,721.98
  4. Step 4: Simplify right side
    3,689.12x = 15,121,034.42
  5. Step 5: Solve for x
    x = 15,121,034.42/3,689.12
  6. Step 6: Final answer
    x = 4,098.82

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.