Home / 3,935.62-5,431.20-2,167.24

Finding the Fourth Proportional to 3,935.62, 5,431.20 and 2,167.24

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Solution

The fourth proportional to 3,935.62, 5,431.20 and 2,167.24 is: 2,990.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,935.62 : 5,431.20 = 2,167.24 : x
  2. Step 2: Convert to fraction form
    3,935.62/5,431.20 = 2,167.24/x
  3. Step 3: Cross multiply
    3,935.62x = 5,431.20 × 2,167.24
  4. Step 4: Simplify right side
    3,935.62x = 11,770,713.89
  5. Step 5: Solve for x
    x = 11,770,713.89/3,935.62
  6. Step 6: Final answer
    x = 2,990.82

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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.