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Finding the Third Proportional to 3,425 and 7,521

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Solution

The third proportional to 3,425 and 7,521 is: 16,515.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,425 : 7,521 = 7,521 : x
  2. Step 2: Convert to fraction form
    3,425/7,521 = 7,521/x
  3. Step 3: Cross multiply
    3,425x = 7,521 × 7,521
  4. Step 4: Simplify right side
    3,425x = 56,565,441
  5. Step 5: Solve for x
    x = 56,565,441/3,425
  6. Step 6: Final answer
    x = 16,515.46

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.