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Finding the Third Proportional to 4,215.38 and 4,620.38

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Solution

The third proportional to 4,215.38 and 4,620.38 is: 5,064.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,215.38 : 4,620.38 = 4,620.38 : x
  2. Step 2: Convert to fraction form
    4,215.38/4,620.38 = 4,620.38/x
  3. Step 3: Cross multiply
    4,215.38x = 4,620.38 × 4,620.38
  4. Step 4: Simplify right side
    4,215.38x = 21,347,865.14
  5. Step 5: Solve for x
    x = 21,347,865.14/4,215.38
  6. Step 6: Final answer
    x = 5,064.29

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Why These Related Problems?

These problems maintain the same ratio (1.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.