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Finding the Third Proportional to 3,504.75 and 7,720.71

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Solution

The third proportional to 3,504.75 and 7,720.71 is: 17,008.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,504.75 : 7,720.71 = 7,720.71 : x
  2. Step 2: Convert to fraction form
    3,504.75/7,720.71 = 7,720.71/x
  3. Step 3: Cross multiply
    3,504.75x = 7,720.71 × 7,720.71
  4. Step 4: Simplify right side
    3,504.75x = 59,609,332.14
  5. Step 5: Solve for x
    x = 59,609,332.14/3,504.75
  6. Step 6: Final answer
    x = 17,008.14

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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.