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Finding the Fourth Proportional to 8,662.44, 12,994.74 and 2,819.64

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Solution

The fourth proportional to 8,662.44, 12,994.74 and 2,819.64 is: 4,229.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,662.44 : 12,994.74 = 2,819.64 : x
  2. Step 2: Convert to fraction form
    8,662.44/12,994.74 = 2,819.64/x
  3. Step 3: Cross multiply
    8,662.44x = 12,994.74 × 2,819.64
  4. Step 4: Simplify right side
    8,662.44x = 36,640,488.69
  5. Step 5: Solve for x
    x = 36,640,488.69/8,662.44
  6. Step 6: Final answer
    x = 4,229.81

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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.