Home / 3,781.98-5,218.38-2,209.77

Finding the Fourth Proportional to 3,781.98, 5,218.38 and 2,209.77

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Solution

The fourth proportional to 3,781.98, 5,218.38 and 2,209.77 is: 3,049.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.98 : 5,218.38 = 2,209.77 : x
  2. Step 2: Convert to fraction form
    3,781.98/5,218.38 = 2,209.77/x
  3. Step 3: Cross multiply
    3,781.98x = 5,218.38 × 2,209.77
  4. Step 4: Simplify right side
    3,781.98x = 11,531,419.57
  5. Step 5: Solve for x
    x = 11,531,419.57/3,781.98
  6. Step 6: Final answer
    x = 3,049.04

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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.