Home / 3,936.25-5,431.82-2,167.82

Finding the Fourth Proportional to 3,936.25, 5,431.82 and 2,167.82

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Solution

The fourth proportional to 3,936.25, 5,431.82 and 2,167.82 is: 2,991.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936.25 : 5,431.82 = 2,167.82 : x
  2. Step 2: Convert to fraction form
    3,936.25/5,431.82 = 2,167.82/x
  3. Step 3: Cross multiply
    3,936.25x = 5,431.82 × 2,167.82
  4. Step 4: Simplify right side
    3,936.25x = 11,775,186.29
  5. Step 5: Solve for x
    x = 11,775,186.29/3,936.25
  6. Step 6: Final answer
    x = 2,991.48

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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.