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Finding the Fourth Proportional to 8,512.79, 12,769.18 and 2,669.85

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Solution

The fourth proportional to 8,512.79, 12,769.18 and 2,669.85 is: 4,004.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,512.79 : 12,769.18 = 2,669.85 : x
  2. Step 2: Convert to fraction form
    8,512.79/12,769.18 = 2,669.85/x
  3. Step 3: Cross multiply
    8,512.79x = 12,769.18 × 2,669.85
  4. Step 4: Simplify right side
    8,512.79x = 34,091,795.22
  5. Step 5: Solve for x
    x = 34,091,795.22/8,512.79
  6. Step 6: Final answer
    x = 4,004.77

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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.