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Finding the Third Proportional to 5,778 and 12,138.75

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Solution

The third proportional to 5,778 and 12,138.75 is: 25,501.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,778 : 12,138.75 = 12,138.75 : x
  2. Step 2: Convert to fraction form
    5,778/12,138.75 = 12,138.75/x
  3. Step 3: Cross multiply
    5,778x = 12,138.75 × 12,138.75
  4. Step 4: Simplify right side
    5,778x = 147,349,251.56
  5. Step 5: Solve for x
    x = 147,349,251.56/5,778
  6. Step 6: Final answer
    x = 25,501.77

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.