Home / 3,935.55-5,431.17-2,167.28

Finding the Fourth Proportional to 3,935.55, 5,431.17 and 2,167.28

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Solution

The fourth proportional to 3,935.55, 5,431.17 and 2,167.28 is: 2,990.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,935.55 : 5,431.17 = 2,167.28 : x
  2. Step 2: Convert to fraction form
    3,935.55/5,431.17 = 2,167.28/x
  3. Step 3: Cross multiply
    3,935.55x = 5,431.17 × 2,167.28
  4. Step 4: Simplify right side
    3,935.55x = 11,770,866.12
  5. Step 5: Solve for x
    x = 11,770,866.12/3,935.55
  6. Step 6: Final answer
    x = 2,990.91

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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.