Home / 3,912.30-5,867.77-1,138.68

Finding the Fourth Proportional to 3,912.30, 5,867.77 and 1,138.68

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Solution

The fourth proportional to 3,912.30, 5,867.77 and 1,138.68 is: 1,707.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.30 : 5,867.77 = 1,138.68 : x
  2. Step 2: Convert to fraction form
    3,912.30/5,867.77 = 1,138.68/x
  3. Step 3: Cross multiply
    3,912.30x = 5,867.77 × 1,138.68
  4. Step 4: Simplify right side
    3,912.30x = 6,681,524.93
  5. Step 5: Solve for x
    x = 6,681,524.93/3,912.30
  6. Step 6: Final answer
    x = 1,707.83

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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.