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Finding the Third Proportional to 4,782 and 10,143.75

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Solution

The third proportional to 4,782 and 10,143.75 is: 21,517.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,782 : 10,143.75 = 10,143.75 : x
  2. Step 2: Convert to fraction form
    4,782/10,143.75 = 10,143.75/x
  3. Step 3: Cross multiply
    4,782x = 10,143.75 × 10,143.75
  4. Step 4: Simplify right side
    4,782x = 102,895,664.06
  5. Step 5: Solve for x
    x = 102,895,664.06/4,782
  6. Step 6: Final answer
    x = 21,517.29

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.