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Finding the Third Proportional to 3,320 and 4,774

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Solution

The third proportional to 3,320 and 4,774 is: 6,864.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,320 : 4,774 = 4,774 : x
  2. Step 2: Convert to fraction form
    3,320/4,774 = 4,774/x
  3. Step 3: Cross multiply
    3,320x = 4,774 × 4,774
  4. Step 4: Simplify right side
    3,320x = 22,791,076
  5. Step 5: Solve for x
    x = 22,791,076/3,320
  6. Step 6: Final answer
    x = 6,864.78

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.