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Finding the Fourth Proportional to 8,512, 12,769.92 and 2,668

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Solution

The fourth proportional to 8,512, 12,769.92 and 2,668 is: 4,002.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,512 : 12,769.92 = 2,668 : x
  2. Step 2: Convert to fraction form
    8,512/12,769.92 = 2,668/x
  3. Step 3: Cross multiply
    8,512x = 12,769.92 × 2,668
  4. Step 4: Simplify right side
    8,512x = 34,070,146.56
  5. Step 5: Solve for x
    x = 34,070,146.56/8,512
  6. Step 6: Final answer
    x = 4,002.60

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.