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Finding the Fourth Proportional to 7,998.68, 11,999.92 and 3,616.13

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Solution

The fourth proportional to 7,998.68, 11,999.92 and 3,616.13 is: 5,425.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,998.68 : 11,999.92 = 3,616.13 : x
  2. Step 2: Convert to fraction form
    7,998.68/11,999.92 = 3,616.13/x
  3. Step 3: Cross multiply
    7,998.68x = 11,999.92 × 3,616.13
  4. Step 4: Simplify right side
    7,998.68x = 43,393,282.63
  5. Step 5: Solve for x
    x = 43,393,282.63/7,998.68
  6. Step 6: Final answer
    x = 5,425.05

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1.5x scale

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.