Home / 3,781.47-5,216.97-2,789.13

Finding the Fourth Proportional to 3,781.47, 5,216.97 and 2,789.13

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Solution

The fourth proportional to 3,781.47, 5,216.97 and 2,789.13 is: 3,847.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.47 : 5,216.97 = 2,789.13 : x
  2. Step 2: Convert to fraction form
    3,781.47/5,216.97 = 2,789.13/x
  3. Step 3: Cross multiply
    3,781.47x = 5,216.97 × 2,789.13
  4. Step 4: Simplify right side
    3,781.47x = 14,550,807.54
  5. Step 5: Solve for x
    x = 14,550,807.54/3,781.47
  6. Step 6: Final answer
    x = 3,847.92

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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.