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Finding the Fourth Proportional to 8,163.90, 12,243.79 and 2,240.80

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Solution

The fourth proportional to 8,163.90, 12,243.79 and 2,240.80 is: 3,360.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,163.90 : 12,243.79 = 2,240.80 : x
  2. Step 2: Convert to fraction form
    8,163.90/12,243.79 = 2,240.80/x
  3. Step 3: Cross multiply
    8,163.90x = 12,243.79 × 2,240.80
  4. Step 4: Simplify right side
    8,163.90x = 27,435,884.63
  5. Step 5: Solve for x
    x = 27,435,884.63/8,163.90
  6. Step 6: Final answer
    x = 3,360.63

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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.