Home / 3,964.38-5,469.12-2,786.22

Finding the Fourth Proportional to 3,964.38, 5,469.12 and 2,786.22

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Solution

The fourth proportional to 3,964.38, 5,469.12 and 2,786.22 is: 3,843.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,964.38 : 5,469.12 = 2,786.22 : x
  2. Step 2: Convert to fraction form
    3,964.38/5,469.12 = 2,786.22/x
  3. Step 3: Cross multiply
    3,964.38x = 5,469.12 × 2,786.22
  4. Step 4: Simplify right side
    3,964.38x = 15,238,171.53
  5. Step 5: Solve for x
    x = 15,238,171.53/3,964.38
  6. Step 6: Final answer
    x = 3,843.77

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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.