Home / 8,119.82-12,180.18-3,963.37

Finding the Fourth Proportional to 8,119.82, 12,180.18 and 3,963.37

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Solution

The fourth proportional to 8,119.82, 12,180.18 and 3,963.37 is: 5,945.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,119.82 : 12,180.18 = 3,963.37 : x
  2. Step 2: Convert to fraction form
    8,119.82/12,180.18 = 3,963.37/x
  3. Step 3: Cross multiply
    8,119.82x = 12,180.18 × 3,963.37
  4. Step 4: Simplify right side
    8,119.82x = 48,274,560.01
  5. Step 5: Solve for x
    x = 48,274,560.01/8,119.82
  6. Step 6: Final answer
    x = 5,945.27

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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.