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Finding the Fourth Proportional to 8,166.75, 12,249.90 and 2,620.47

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Solution

The fourth proportional to 8,166.75, 12,249.90 and 2,620.47 is: 3,930.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,166.75 : 12,249.90 = 2,620.47 : x
  2. Step 2: Convert to fraction form
    8,166.75/12,249.90 = 2,620.47/x
  3. Step 3: Cross multiply
    8,166.75x = 12,249.90 × 2,620.47
  4. Step 4: Simplify right side
    8,166.75x = 32,100,495.45
  5. Step 5: Solve for x
    x = 32,100,495.45/8,166.75
  6. Step 6: Final answer
    x = 3,930.63

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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.