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Finding the Third Proportional to 3,751.31 and 8,120.25

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Solution

The third proportional to 3,751.31 and 8,120.25 is: 17,577.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,751.31 : 8,120.25 = 8,120.25 : x
  2. Step 2: Convert to fraction form
    3,751.31/8,120.25 = 8,120.25/x
  3. Step 3: Cross multiply
    3,751.31x = 8,120.25 × 8,120.25
  4. Step 4: Simplify right side
    3,751.31x = 65,938,460.06
  5. Step 5: Solve for x
    x = 65,938,460.06/3,751.31
  6. Step 6: Final answer
    x = 17,577.44

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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.