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Finding the Third Proportional to 2,688 and 6,621

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Solution

The third proportional to 2,688 and 6,621 is: 16,308.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688 : 6,621 = 6,621 : x
  2. Step 2: Convert to fraction form
    2,688/6,621 = 6,621/x
  3. Step 3: Cross multiply
    2,688x = 6,621 × 6,621
  4. Step 4: Simplify right side
    2,688x = 43,837,641
  5. Step 5: Solve for x
    x = 43,837,641/2,688
  6. Step 6: Final answer
    x = 16,308.65

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Why These Related Problems?

These problems maintain the same ratio (2.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.