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Finding the Third Proportional to 8,118 and 10,239.75

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Solution

The third proportional to 8,118 and 10,239.75 is: 12,916.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,118 : 10,239.75 = 10,239.75 : x
  2. Step 2: Convert to fraction form
    8,118/10,239.75 = 10,239.75/x
  3. Step 3: Cross multiply
    8,118x = 10,239.75 × 10,239.75
  4. Step 4: Simplify right side
    8,118x = 104,852,480.06
  5. Step 5: Solve for x
    x = 104,852,480.06/8,118
  6. Step 6: Final answer
    x = 12,916.05

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Why These Related Problems?

These problems maintain the same ratio (1.26) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.