Home / 3,909.91-5,395.97-2,581.31

Finding the Fourth Proportional to 3,909.91, 5,395.97 and 2,581.31

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Solution

The fourth proportional to 3,909.91, 5,395.97 and 2,581.31 is: 3,562.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,909.91 : 5,395.97 = 2,581.31 : x
  2. Step 2: Convert to fraction form
    3,909.91/5,395.97 = 2,581.31/x
  3. Step 3: Cross multiply
    3,909.91x = 5,395.97 × 2,581.31
  4. Step 4: Simplify right side
    3,909.91x = 13,928,671.32
  5. Step 5: Solve for x
    x = 13,928,671.32/3,909.91
  6. Step 6: Final answer
    x = 3,562.40

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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.