Home / 3,871.11-5,341.85-2,192.71

Finding the Fourth Proportional to 3,871.11, 5,341.85 and 2,192.71

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Solution

The fourth proportional to 3,871.11, 5,341.85 and 2,192.71 is: 3,025.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871.11 : 5,341.85 = 2,192.71 : x
  2. Step 2: Convert to fraction form
    3,871.11/5,341.85 = 2,192.71/x
  3. Step 3: Cross multiply
    3,871.11x = 5,341.85 × 2,192.71
  4. Step 4: Simplify right side
    3,871.11x = 11,713,127.91
  5. Step 5: Solve for x
    x = 11,713,127.91/3,871.11
  6. Step 6: Final answer
    x = 3,025.78

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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.