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Finding the Third Proportional to 4,104 and 8,720.25

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Solution

The third proportional to 4,104 and 8,720.25 is: 18,528.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,104 : 8,720.25 = 8,720.25 : x
  2. Step 2: Convert to fraction form
    4,104/8,720.25 = 8,720.25/x
  3. Step 3: Cross multiply
    4,104x = 8,720.25 × 8,720.25
  4. Step 4: Simplify right side
    4,104x = 76,042,760.06
  5. Step 5: Solve for x
    x = 76,042,760.06/4,104
  6. Step 6: Final answer
    x = 18,528.94

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.