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Finding the Fourth Proportional to 8,827.80, 13,230.90 and 3,892.20

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Solution

The fourth proportional to 8,827.80, 13,230.90 and 3,892.20 is: 5,833.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,827.80 : 13,230.90 = 3,892.20 : x
  2. Step 2: Convert to fraction form
    8,827.80/13,230.90 = 3,892.20/x
  3. Step 3: Cross multiply
    8,827.80x = 13,230.90 × 3,892.20
  4. Step 4: Simplify right side
    8,827.80x = 51,497,308.98
  5. Step 5: Solve for x
    x = 51,497,308.98/8,827.80
  6. Step 6: Final answer
    x = 5,833.54

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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.