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Finding the Third Proportional to 1,265 and 3,419

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Solution

The third proportional to 1,265 and 3,419 is: 9,240.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,265 : 3,419 = 3,419 : x
  2. Step 2: Convert to fraction form
    1,265/3,419 = 3,419/x
  3. Step 3: Cross multiply
    1,265x = 3,419 × 3,419
  4. Step 4: Simplify right side
    1,265x = 11,689,561
  5. Step 5: Solve for x
    x = 11,689,561/1,265
  6. Step 6: Final answer
    x = 9,240.76

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Why These Related Problems?

These problems maintain the same ratio (2.70) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.