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Finding the Third Proportional to 1,679 and 3,529

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Solution

The third proportional to 1,679 and 3,529 is: 7,417.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,679 : 3,529 = 3,529 : x
  2. Step 2: Convert to fraction form
    1,679/3,529 = 3,529/x
  3. Step 3: Cross multiply
    1,679x = 3,529 × 3,529
  4. Step 4: Simplify right side
    1,679x = 12,453,841
  5. Step 5: Solve for x
    x = 12,453,841/1,679
  6. Step 6: Final answer
    x = 7,417.42

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.