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Finding the Fourth Proportional to 8,612.74, 12,917.43 and 2,371.15

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Solution

The fourth proportional to 8,612.74, 12,917.43 and 2,371.15 is: 3,556.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,612.74 : 12,917.43 = 2,371.15 : x
  2. Step 2: Convert to fraction form
    8,612.74/12,917.43 = 2,371.15/x
  3. Step 3: Cross multiply
    8,612.74x = 12,917.43 × 2,371.15
  4. Step 4: Simplify right side
    8,612.74x = 30,629,164.14
  5. Step 5: Solve for x
    x = 30,629,164.14/8,612.74
  6. Step 6: Final answer
    x = 3,556.26

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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.