Home / 8,664.73-12,996.90-2,821.30

Finding the Fourth Proportional to 8,664.73, 12,996.90 and 2,821.30

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Solution

The fourth proportional to 8,664.73, 12,996.90 and 2,821.30 is: 4,231.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,664.73 : 12,996.90 = 2,821.30 : x
  2. Step 2: Convert to fraction form
    8,664.73/12,996.90 = 2,821.30/x
  3. Step 3: Cross multiply
    8,664.73x = 12,996.90 × 2,821.30
  4. Step 4: Simplify right side
    8,664.73x = 36,668,153.97
  5. Step 5: Solve for x
    x = 36,668,153.97/8,664.73
  6. Step 6: Final answer
    x = 4,231.89

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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.