Home / 3,781.98-5,218.90-2,103.29

Finding the Fourth Proportional to 3,781.98, 5,218.90 and 2,103.29

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Solution

The fourth proportional to 3,781.98, 5,218.90 and 2,103.29 is: 2,902.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.98 : 5,218.90 = 2,103.29 : x
  2. Step 2: Convert to fraction form
    3,781.98/5,218.90 = 2,103.29/x
  3. Step 3: Cross multiply
    3,781.98x = 5,218.90 × 2,103.29
  4. Step 4: Simplify right side
    3,781.98x = 10,976,867.97
  5. Step 5: Solve for x
    x = 10,976,867.97/3,781.98
  6. Step 6: Final answer
    x = 2,902.41

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1.5x scale

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.