Home / 3,781.86-5,217.51-2,789.49

Finding the Fourth Proportional to 3,781.86, 5,217.51 and 2,789.49

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Solution

The fourth proportional to 3,781.86, 5,217.51 and 2,789.49 is: 3,848.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.86 : 5,217.51 = 2,789.49 : x
  2. Step 2: Convert to fraction form
    3,781.86/5,217.51 = 2,789.49/x
  3. Step 3: Cross multiply
    3,781.86x = 5,217.51 × 2,789.49
  4. Step 4: Simplify right side
    3,781.86x = 14,554,191.97
  5. Step 5: Solve for x
    x = 14,554,191.97/3,781.86
  6. Step 6: Final answer
    x = 3,848.42

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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.