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Finding the Fourth Proportional to 10,979.94, 16,469.94 and 2,659.94

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Solution

The fourth proportional to 10,979.94, 16,469.94 and 2,659.94 is: 3,989.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,979.94 : 16,469.94 = 2,659.94 : x
  2. Step 2: Convert to fraction form
    10,979.94/16,469.94 = 2,659.94/x
  3. Step 3: Cross multiply
    10,979.94x = 16,469.94 × 2,659.94
  4. Step 4: Simplify right side
    10,979.94x = 43,809,052.20
  5. Step 5: Solve for x
    x = 43,809,052.20/10,979.94
  6. Step 6: Final answer
    x = 3,989.92

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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.