Home / 3,863.91-5,781.29-2,221.23

Finding the Fourth Proportional to 3,863.91, 5,781.29 and 2,221.23

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Solution

The fourth proportional to 3,863.91, 5,781.29 and 2,221.23 is: 3,323.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,863.91 : 5,781.29 = 2,221.23 : x
  2. Step 2: Convert to fraction form
    3,863.91/5,781.29 = 2,221.23/x
  3. Step 3: Cross multiply
    3,863.91x = 5,781.29 × 2,221.23
  4. Step 4: Simplify right side
    3,863.91x = 12,841,563.68
  5. Step 5: Solve for x
    x = 12,841,563.68/3,863.91
  6. Step 6: Final answer
    x = 3,323.46

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1.5x scale

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.