Home / 3,138.12-4,707.56-1,163.43

Finding the Fourth Proportional to 3,138.12, 4,707.56 and 1,163.43

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Solution

The fourth proportional to 3,138.12, 4,707.56 and 1,163.43 is: 1,745.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.12 : 4,707.56 = 1,163.43 : x
  2. Step 2: Convert to fraction form
    3,138.12/4,707.56 = 1,163.43/x
  3. Step 3: Cross multiply
    3,138.12x = 4,707.56 × 1,163.43
  4. Step 4: Simplify right side
    3,138.12x = 5,476,919.44
  5. Step 5: Solve for x
    x = 5,476,919.44/3,138.12
  6. Step 6: Final answer
    x = 1,745.29

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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.