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Finding the Third Proportional to 1,424 and 3,512

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Solution

The third proportional to 1,424 and 3,512 is: 8,661.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,424 : 3,512 = 3,512 : x
  2. Step 2: Convert to fraction form
    1,424/3,512 = 3,512/x
  3. Step 3: Cross multiply
    1,424x = 3,512 × 3,512
  4. Step 4: Simplify right side
    1,424x = 12,334,144
  5. Step 5: Solve for x
    x = 12,334,144/1,424
  6. Step 6: Final answer
    x = 8,661.62

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Why These Related Problems?

These problems maintain the same ratio (2.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.