Home / 3,932.19-5,426.40-2,163.78

Finding the Fourth Proportional to 3,932.19, 5,426.40 and 2,163.78

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Solution

The fourth proportional to 3,932.19, 5,426.40 and 2,163.78 is: 2,986.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,932.19 : 5,426.40 = 2,163.78 : x
  2. Step 2: Convert to fraction form
    3,932.19/5,426.40 = 2,163.78/x
  3. Step 3: Cross multiply
    3,932.19x = 5,426.40 × 2,163.78
  4. Step 4: Simplify right side
    3,932.19x = 11,741,535.79
  5. Step 5: Solve for x
    x = 11,741,535.79/3,932.19
  6. Step 6: Final answer
    x = 2,986.00

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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.