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Finding the Third Proportional to 863.50 and 1,893

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Solution

The third proportional to 863.50 and 1,893 is: 4,149.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    863.50 : 1,893 = 1,893 : x
  2. Step 2: Convert to fraction form
    863.50/1,893 = 1,893/x
  3. Step 3: Cross multiply
    863.50x = 1,893 × 1,893
  4. Step 4: Simplify right side
    863.50x = 3,583,449
  5. Step 5: Solve for x
    x = 3,583,449/863.50
  6. Step 6: Final answer
    x = 4,149.91

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.