Home / 3,906.38-5,390.57-2,227.79

Finding the Fourth Proportional to 3,906.38, 5,390.57 and 2,227.79

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Solution

The fourth proportional to 3,906.38, 5,390.57 and 2,227.79 is: 3,074.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,906.38 : 5,390.57 = 2,227.79 : x
  2. Step 2: Convert to fraction form
    3,906.38/5,390.57 = 2,227.79/x
  3. Step 3: Cross multiply
    3,906.38x = 5,390.57 × 2,227.79
  4. Step 4: Simplify right side
    3,906.38x = 12,009,076.99
  5. Step 5: Solve for x
    x = 12,009,076.99/3,906.38
  6. Step 6: Final answer
    x = 3,074.22

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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.