Home / 2,138.20-3,204.60-1,163.50

Finding the Fourth Proportional to 2,138.20, 3,204.60 and 1,163.50

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Solution

The fourth proportional to 2,138.20, 3,204.60 and 1,163.50 is: 1,743.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138.20 : 3,204.60 = 1,163.50 : x
  2. Step 2: Convert to fraction form
    2,138.20/3,204.60 = 1,163.50/x
  3. Step 3: Cross multiply
    2,138.20x = 3,204.60 × 1,163.50
  4. Step 4: Simplify right side
    2,138.20x = 3,728,552.10
  5. Step 5: Solve for x
    x = 3,728,552.10/2,138.20
  6. Step 6: Final answer
    x = 1,743.78

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1.5x scale

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.