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Finding the Fourth Proportional to 8,616.99, 12,917.27 and 2,769.49

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Solution

The fourth proportional to 8,616.99, 12,917.27 and 2,769.49 is: 4,151.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,616.99 : 12,917.27 = 2,769.49 : x
  2. Step 2: Convert to fraction form
    8,616.99/12,917.27 = 2,769.49/x
  3. Step 3: Cross multiply
    8,616.99x = 12,917.27 × 2,769.49
  4. Step 4: Simplify right side
    8,616.99x = 35,774,250.09
  5. Step 5: Solve for x
    x = 35,774,250.09/8,616.99
  6. Step 6: Final answer
    x = 4,151.59

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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.