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Finding the Third Proportional to 3,219 and 4,981

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Solution

The third proportional to 3,219 and 4,981 is: 7,707.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,219 : 4,981 = 4,981 : x
  2. Step 2: Convert to fraction form
    3,219/4,981 = 4,981/x
  3. Step 3: Cross multiply
    3,219x = 4,981 × 4,981
  4. Step 4: Simplify right side
    3,219x = 24,810,361
  5. Step 5: Solve for x
    x = 24,810,361/3,219
  6. Step 6: Final answer
    x = 7,707.47

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.