Home / 3,931.28-5,425.19-2,163.04

Finding the Fourth Proportional to 3,931.28, 5,425.19 and 2,163.04

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Solution

The fourth proportional to 3,931.28, 5,425.19 and 2,163.04 is: 2,985.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.28 : 5,425.19 = 2,163.04 : x
  2. Step 2: Convert to fraction form
    3,931.28/5,425.19 = 2,163.04/x
  3. Step 3: Cross multiply
    3,931.28x = 5,425.19 × 2,163.04
  4. Step 4: Simplify right side
    3,931.28x = 11,734,902.98
  5. Step 5: Solve for x
    x = 11,734,902.98/3,931.28
  6. Step 6: Final answer
    x = 2,985.01

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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.