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Finding the Fourth Proportional to 8,616.94, 12,917.20 and 2,769.46

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Solution

The fourth proportional to 8,616.94, 12,917.20 and 2,769.46 is: 4,151.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,616.94 : 12,917.20 = 2,769.46 : x
  2. Step 2: Convert to fraction form
    8,616.94/12,917.20 = 2,769.46/x
  3. Step 3: Cross multiply
    8,616.94x = 12,917.20 × 2,769.46
  4. Step 4: Simplify right side
    8,616.94x = 35,773,668.71
  5. Step 5: Solve for x
    x = 35,773,668.71/8,616.94
  6. Step 6: Final answer
    x = 4,151.55

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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.