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Finding the Third Proportional to 5,385 and 11,565

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Solution

The third proportional to 5,385 and 11,565 is: 24,837.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,385 : 11,565 = 11,565 : x
  2. Step 2: Convert to fraction form
    5,385/11,565 = 11,565/x
  3. Step 3: Cross multiply
    5,385x = 11,565 × 11,565
  4. Step 4: Simplify right side
    5,385x = 133,749,225
  5. Step 5: Solve for x
    x = 133,749,225/5,385
  6. Step 6: Final answer
    x = 24,837.37

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.