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Finding the Third Proportional to 7,220 and 11,568

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Solution

The third proportional to 7,220 and 11,568 is: 18,534.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,220 : 11,568 = 11,568 : x
  2. Step 2: Convert to fraction form
    7,220/11,568 = 11,568/x
  3. Step 3: Cross multiply
    7,220x = 11,568 × 11,568
  4. Step 4: Simplify right side
    7,220x = 133,818,624
  5. Step 5: Solve for x
    x = 133,818,624/7,220
  6. Step 6: Final answer
    x = 18,534.44

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.