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Finding the Third Proportional to 7,218.75 and 15,548.25

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Solution

The third proportional to 7,218.75 and 15,548.25 is: 33,488.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,218.75 : 15,548.25 = 15,548.25 : x
  2. Step 2: Convert to fraction form
    7,218.75/15,548.25 = 15,548.25/x
  3. Step 3: Cross multiply
    7,218.75x = 15,548.25 × 15,548.25
  4. Step 4: Simplify right side
    7,218.75x = 241,748,078.06
  5. Step 5: Solve for x
    x = 241,748,078.06/7,218.75
  6. Step 6: Final answer
    x = 33,488.91

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.