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Finding the Fourth Proportional to 7,998.80, 11,996.52 and 2,154

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Solution

The fourth proportional to 7,998.80, 11,996.52 and 2,154 is: 3,230.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,998.80 : 11,996.52 = 2,154 : x
  2. Step 2: Convert to fraction form
    7,998.80/11,996.52 = 2,154/x
  3. Step 3: Cross multiply
    7,998.80x = 11,996.52 × 2,154
  4. Step 4: Simplify right side
    7,998.80x = 25,840,504.08
  5. Step 5: Solve for x
    x = 25,840,504.08/7,998.80
  6. Step 6: Final answer
    x = 3,230.55

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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.