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Finding the Third Proportional to 3,356 and 6,688

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Solution

The third proportional to 3,356 and 6,688 is: 13,328.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,356 : 6,688 = 6,688 : x
  2. Step 2: Convert to fraction form
    3,356/6,688 = 6,688/x
  3. Step 3: Cross multiply
    3,356x = 6,688 × 6,688
  4. Step 4: Simplify right side
    3,356x = 44,729,344
  5. Step 5: Solve for x
    x = 44,729,344/3,356
  6. Step 6: Final answer
    x = 13,328.17

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Why These Related Problems?

These problems maintain the same ratio (1.99) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.