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Finding the Third Proportional to 3,212 and 6,646

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Solution

The third proportional to 3,212 and 6,646 is: 13,751.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,212 : 6,646 = 6,646 : x
  2. Step 2: Convert to fraction form
    3,212/6,646 = 6,646/x
  3. Step 3: Cross multiply
    3,212x = 6,646 × 6,646
  4. Step 4: Simplify right side
    3,212x = 44,169,316
  5. Step 5: Solve for x
    x = 44,169,316/3,212
  6. Step 6: Final answer
    x = 13,751.34

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.