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Finding the Third Proportional to 3,342.94 and 7,215.19

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Solution

The third proportional to 3,342.94 and 7,215.19 is: 15,572.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,342.94 : 7,215.19 = 7,215.19 : x
  2. Step 2: Convert to fraction form
    3,342.94/7,215.19 = 7,215.19/x
  3. Step 3: Cross multiply
    3,342.94x = 7,215.19 × 7,215.19
  4. Step 4: Simplify right side
    3,342.94x = 52,058,930.66
  5. Step 5: Solve for x
    x = 52,058,930.66/3,342.94
  6. Step 6: Final answer
    x = 15,572.81

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.