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Finding the Fourth Proportional to 8,664.03, 12,996.25 and 2,821.10

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Solution

The fourth proportional to 8,664.03, 12,996.25 and 2,821.10 is: 4,231.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,664.03 : 12,996.25 = 2,821.10 : x
  2. Step 2: Convert to fraction form
    8,664.03/12,996.25 = 2,821.10/x
  3. Step 3: Cross multiply
    8,664.03x = 12,996.25 × 2,821.10
  4. Step 4: Simplify right side
    8,664.03x = 36,663,648.84
  5. Step 5: Solve for x
    x = 36,663,648.84/8,664.03
  6. Step 6: Final answer
    x = 4,231.71

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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.