Home / 3,965.66-5,949.39-2,115.80

Finding the Fourth Proportional to 3,965.66, 5,949.39 and 2,115.80

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Solution

The fourth proportional to 3,965.66, 5,949.39 and 2,115.80 is: 3,174.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,965.66 : 5,949.39 = 2,115.80 : x
  2. Step 2: Convert to fraction form
    3,965.66/5,949.39 = 2,115.80/x
  3. Step 3: Cross multiply
    3,965.66x = 5,949.39 × 2,115.80
  4. Step 4: Simplify right side
    3,965.66x = 12,587,719.36
  5. Step 5: Solve for x
    x = 12,587,719.36/3,965.66
  6. Step 6: Final answer
    x = 3,174.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.