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Finding the Fourth Proportional to 8,644.05, 11,918.16 and 5,105.97

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Solution

The fourth proportional to 8,644.05, 11,918.16 and 5,105.97 is: 7,039.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,644.05 : 11,918.16 = 5,105.97 : x
  2. Step 2: Convert to fraction form
    8,644.05/11,918.16 = 5,105.97/x
  3. Step 3: Cross multiply
    8,644.05x = 11,918.16 × 5,105.97
  4. Step 4: Simplify right side
    8,644.05x = 60,853,767.42
  5. Step 5: Solve for x
    x = 60,853,767.42/8,644.05
  6. Step 6: Final answer
    x = 7,039.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.