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Finding the Third Proportional to 5,089 and 7,621

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Solution

The third proportional to 5,089 and 7,621 is: 11,412.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,089 : 7,621 = 7,621 : x
  2. Step 2: Convert to fraction form
    5,089/7,621 = 7,621/x
  3. Step 3: Cross multiply
    5,089x = 7,621 × 7,621
  4. Step 4: Simplify right side
    5,089x = 58,079,641
  5. Step 5: Solve for x
    x = 58,079,641/5,089
  6. Step 6: Final answer
    x = 11,412.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.