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Finding the Third Proportional to 2,642 and 3,603

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Solution

The third proportional to 2,642 and 3,603 is: 4,913.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,642 : 3,603 = 3,603 : x
  2. Step 2: Convert to fraction form
    2,642/3,603 = 3,603/x
  3. Step 3: Cross multiply
    2,642x = 3,603 × 3,603
  4. Step 4: Simplify right side
    2,642x = 12,981,609
  5. Step 5: Solve for x
    x = 12,981,609/2,642
  6. Step 6: Final answer
    x = 4,913.55

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.