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Finding the Third Proportional to 4,212 and 8,424

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Solution

The third proportional to 4,212 and 8,424 is: 16,848

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,212 : 8,424 = 8,424 : x
  2. Step 2: Convert to fraction form
    4,212/8,424 = 8,424/x
  3. Step 3: Cross multiply
    4,212x = 8,424 × 8,424
  4. Step 4: Simplify right side
    4,212x = 70,963,776
  5. Step 5: Solve for x
    x = 70,963,776/4,212
  6. Step 6: Final answer
    x = 16,848

Related Problems

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Why These Related Problems?

These problems maintain the same ratio (2) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.