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Finding the Fourth Proportional to 8,512.56, 12,767.76 and 2,668.68

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Solution

The fourth proportional to 8,512.56, 12,767.76 and 2,668.68 is: 4,002.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,512.56 : 12,767.76 = 2,668.68 : x
  2. Step 2: Convert to fraction form
    8,512.56/12,767.76 = 2,668.68/x
  3. Step 3: Cross multiply
    8,512.56x = 12,767.76 × 2,668.68
  4. Step 4: Simplify right side
    8,512.56x = 34,073,065.76
  5. Step 5: Solve for x
    x = 34,073,065.76/8,512.56
  6. Step 6: Final answer
    x = 4,002.68

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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.