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Finding the Fourth Proportional to 8,817.14, 12,168.20 and 5,827.79

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Solution

The fourth proportional to 8,817.14, 12,168.20 and 5,827.79 is: 8,042.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,817.14 : 12,168.20 = 5,827.79 : x
  2. Step 2: Convert to fraction form
    8,817.14/12,168.20 = 5,827.79/x
  3. Step 3: Cross multiply
    8,817.14x = 12,168.20 × 5,827.79
  4. Step 4: Simplify right side
    8,817.14x = 70,913,715.56
  5. Step 5: Solve for x
    x = 70,913,715.56/8,817.14
  6. Step 6: Final answer
    x = 8,042.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.