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Finding the Third Proportional to 1,617 and 3,531

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Solution

The third proportional to 1,617 and 3,531 is: 7,710.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,617 : 3,531 = 3,531 : x
  2. Step 2: Convert to fraction form
    1,617/3,531 = 3,531/x
  3. Step 3: Cross multiply
    1,617x = 3,531 × 3,531
  4. Step 4: Simplify right side
    1,617x = 12,467,961
  5. Step 5: Solve for x
    x = 12,467,961/1,617
  6. Step 6: Final answer
    x = 7,710.55

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.