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Finding the Fourth Proportional to 8,456.96, 12,687.04 and 2,612.21

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Solution

The fourth proportional to 8,456.96, 12,687.04 and 2,612.21 is: 3,918.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,456.96 : 12,687.04 = 2,612.21 : x
  2. Step 2: Convert to fraction form
    8,456.96/12,687.04 = 2,612.21/x
  3. Step 3: Cross multiply
    8,456.96x = 12,687.04 × 2,612.21
  4. Step 4: Simplify right side
    8,456.96x = 33,141,212.76
  5. Step 5: Solve for x
    x = 33,141,212.76/8,456.96
  6. Step 6: Final answer
    x = 3,918.81

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.