Home / 3,912.20-5,868.32-1,138.88

Finding the Fourth Proportional to 3,912.20, 5,868.32 and 1,138.88

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Solution

The fourth proportional to 3,912.20, 5,868.32 and 1,138.88 is: 1,708.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.20 : 5,868.32 = 1,138.88 : x
  2. Step 2: Convert to fraction form
    3,912.20/5,868.32 = 1,138.88/x
  3. Step 3: Cross multiply
    3,912.20x = 5,868.32 × 1,138.88
  4. Step 4: Simplify right side
    3,912.20x = 6,683,312.28
  5. Step 5: Solve for x
    x = 6,683,312.28/3,912.20
  6. Step 6: Final answer
    x = 1,708.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.