Home / 3,932.15-5,426.19-2,163.78

Finding the Fourth Proportional to 3,932.15, 5,426.19 and 2,163.78

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Solution

The fourth proportional to 3,932.15, 5,426.19 and 2,163.78 is: 2,985.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,932.15 : 5,426.19 = 2,163.78 : x
  2. Step 2: Convert to fraction form
    3,932.15/5,426.19 = 2,163.78/x
  3. Step 3: Cross multiply
    3,932.15x = 5,426.19 × 2,163.78
  4. Step 4: Simplify right side
    3,932.15x = 11,741,081.40
  5. Step 5: Solve for x
    x = 11,741,081.40/3,932.15
  6. Step 6: Final answer
    x = 2,985.92

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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.