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Finding the Fourth Proportional to 6,991.78, 10,481.43 and 2,609.44

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Solution

The fourth proportional to 6,991.78, 10,481.43 and 2,609.44 is: 3,911.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,991.78 : 10,481.43 = 2,609.44 : x
  2. Step 2: Convert to fraction form
    6,991.78/10,481.43 = 2,609.44/x
  3. Step 3: Cross multiply
    6,991.78x = 10,481.43 × 2,609.44
  4. Step 4: Simplify right side
    6,991.78x = 27,350,662.70
  5. Step 5: Solve for x
    x = 27,350,662.70/6,991.78
  6. Step 6: Final answer
    x = 3,911.83

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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.