Home / 3,781.28-5,669.20-1,908.34

Finding the Fourth Proportional to 3,781.28, 5,669.20 and 1,908.34

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Solution

The fourth proportional to 3,781.28, 5,669.20 and 1,908.34 is: 2,861.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.28 : 5,669.20 = 1,908.34 : x
  2. Step 2: Convert to fraction form
    3,781.28/5,669.20 = 1,908.34/x
  3. Step 3: Cross multiply
    3,781.28x = 5,669.20 × 1,908.34
  4. Step 4: Simplify right side
    3,781.28x = 10,818,761.13
  5. Step 5: Solve for x
    x = 10,818,761.13/3,781.28
  6. Step 6: Final answer
    x = 2,861.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.