Home / 3,781.63-5,217.88-2,209.42

Finding the Fourth Proportional to 3,781.63, 5,217.88 and 2,209.42

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Solution

The fourth proportional to 3,781.63, 5,217.88 and 2,209.42 is: 3,048.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.63 : 5,217.88 = 2,209.42 : x
  2. Step 2: Convert to fraction form
    3,781.63/5,217.88 = 2,209.42/x
  3. Step 3: Cross multiply
    3,781.63x = 5,217.88 × 2,209.42
  4. Step 4: Simplify right side
    3,781.63x = 11,528,469.86
  5. Step 5: Solve for x
    x = 11,528,469.86/3,781.63
  6. Step 6: Final answer
    x = 3,048.55

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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.