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Finding the Third Proportional to 5,072 and 7,717

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Solution

The third proportional to 5,072 and 7,717 is: 11,741.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,072 : 7,717 = 7,717 : x
  2. Step 2: Convert to fraction form
    5,072/7,717 = 7,717/x
  3. Step 3: Cross multiply
    5,072x = 7,717 × 7,717
  4. Step 4: Simplify right side
    5,072x = 59,552,089
  5. Step 5: Solve for x
    x = 59,552,089/5,072
  6. Step 6: Final answer
    x = 11,741.34

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.