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Finding the Third Proportional to 1,325 and 3,080

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Solution

The third proportional to 1,325 and 3,080 is: 7,159.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325 : 3,080 = 3,080 : x
  2. Step 2: Convert to fraction form
    1,325/3,080 = 3,080/x
  3. Step 3: Cross multiply
    1,325x = 3,080 × 3,080
  4. Step 4: Simplify right side
    1,325x = 9,486,400
  5. Step 5: Solve for x
    x = 9,486,400/1,325
  6. Step 6: Final answer
    x = 7,159.55

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Why These Related Problems?

These problems maintain the same ratio (2.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.