Home / 3,932.21-5,426.43-2,163.78

Finding the Fourth Proportional to 3,932.21, 5,426.43 and 2,163.78

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Solution

The fourth proportional to 3,932.21, 5,426.43 and 2,163.78 is: 2,986.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,932.21 : 5,426.43 = 2,163.78 : x
  2. Step 2: Convert to fraction form
    3,932.21/5,426.43 = 2,163.78/x
  3. Step 3: Cross multiply
    3,932.21x = 5,426.43 × 2,163.78
  4. Step 4: Simplify right side
    3,932.21x = 11,741,600.71
  5. Step 5: Solve for x
    x = 11,741,600.71/3,932.21
  6. Step 6: Final answer
    x = 2,986.01

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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.