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Finding the Fourth Proportional to 8,694.11, 11,998.48 and 4,917.31

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Solution

The fourth proportional to 8,694.11, 11,998.48 and 4,917.31 is: 6,786.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,694.11 : 11,998.48 = 4,917.31 : x
  2. Step 2: Convert to fraction form
    8,694.11/11,998.48 = 4,917.31/x
  3. Step 3: Cross multiply
    8,694.11x = 11,998.48 × 4,917.31
  4. Step 4: Simplify right side
    8,694.11x = 59,000,245.69
  5. Step 5: Solve for x
    x = 59,000,245.69/8,694.11
  6. Step 6: Final answer
    x = 6,786.23

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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.