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Finding the Third Proportional to 4,222.13 and 9,279.56

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Solution

The third proportional to 4,222.13 and 9,279.56 is: 20,395.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,222.13 : 9,279.56 = 9,279.56 : x
  2. Step 2: Convert to fraction form
    4,222.13/9,279.56 = 9,279.56/x
  3. Step 3: Cross multiply
    4,222.13x = 9,279.56 × 9,279.56
  4. Step 4: Simplify right side
    4,222.13x = 86,110,280.19
  5. Step 5: Solve for x
    x = 86,110,280.19/4,222.13
  6. Step 6: Final answer
    x = 20,395.01

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.