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Finding the Fourth Proportional to 8,672.69, 13,001.22 and 3,122.13

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Solution

The fourth proportional to 8,672.69, 13,001.22 and 3,122.13 is: 4,680.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,672.69 : 13,001.22 = 3,122.13 : x
  2. Step 2: Convert to fraction form
    8,672.69/13,001.22 = 3,122.13/x
  3. Step 3: Cross multiply
    8,672.69x = 13,001.22 × 3,122.13
  4. Step 4: Simplify right side
    8,672.69x = 40,591,499.00
  5. Step 5: Solve for x
    x = 40,591,499.00/8,672.69
  6. Step 6: Final answer
    x = 4,680.38

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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.