Home / 3,991.20-5,507.76-2,222.97

Finding the Fourth Proportional to 3,991.20, 5,507.76 and 2,222.97

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Solution

The fourth proportional to 3,991.20, 5,507.76 and 2,222.97 is: 3,067.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.20 : 5,507.76 = 2,222.97 : x
  2. Step 2: Convert to fraction form
    3,991.20/5,507.76 = 2,222.97/x
  3. Step 3: Cross multiply
    3,991.20x = 5,507.76 × 2,222.97
  4. Step 4: Simplify right side
    3,991.20x = 12,243,585.25
  5. Step 5: Solve for x
    x = 12,243,585.25/3,991.20
  6. Step 6: Final answer
    x = 3,067.65

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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.