Home / 3,439.71-5,161.28-1,361.21

Finding the Fourth Proportional to 3,439.71, 5,161.28 and 1,361.21

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Solution

The fourth proportional to 3,439.71, 5,161.28 and 1,361.21 is: 2,042.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,439.71 : 5,161.28 = 1,361.21 : x
  2. Step 2: Convert to fraction form
    3,439.71/5,161.28 = 1,361.21/x
  3. Step 3: Cross multiply
    3,439.71x = 5,161.28 × 1,361.21
  4. Step 4: Simplify right side
    3,439.71x = 7,025,553.34
  5. Step 5: Solve for x
    x = 7,025,553.34/3,439.71
  6. Step 6: Final answer
    x = 2,042.48

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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.