Home / 3,781.11-5,217.81-2,102.47

Finding the Fourth Proportional to 3,781.11, 5,217.81 and 2,102.47

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Solution

The fourth proportional to 3,781.11, 5,217.81 and 2,102.47 is: 2,901.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.11 : 5,217.81 = 2,102.47 : x
  2. Step 2: Convert to fraction form
    3,781.11/5,217.81 = 2,102.47/x
  3. Step 3: Cross multiply
    3,781.11x = 5,217.81 × 2,102.47
  4. Step 4: Simplify right side
    3,781.11x = 10,970,288.99
  5. Step 5: Solve for x
    x = 10,970,288.99/3,781.11
  6. Step 6: Final answer
    x = 2,901.34

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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.