Home / 3,912.29-5,399.08-2,143.88

Finding the Fourth Proportional to 3,912.29, 5,399.08 and 2,143.88

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Solution

The fourth proportional to 3,912.29, 5,399.08 and 2,143.88 is: 2,958.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.29 : 5,399.08 = 2,143.88 : x
  2. Step 2: Convert to fraction form
    3,912.29/5,399.08 = 2,143.88/x
  3. Step 3: Cross multiply
    3,912.29x = 5,399.08 × 2,143.88
  4. Step 4: Simplify right side
    3,912.29x = 11,574,952.64
  5. Step 5: Solve for x
    x = 11,574,952.64/3,912.29
  6. Step 6: Final answer
    x = 2,958.62

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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.