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Finding the Third Proportional to 3,478 and 4,492

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Solution

The third proportional to 3,478 and 4,492 is: 5,801.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478 : 4,492 = 4,492 : x
  2. Step 2: Convert to fraction form
    3,478/4,492 = 4,492/x
  3. Step 3: Cross multiply
    3,478x = 4,492 × 4,492
  4. Step 4: Simplify right side
    3,478x = 20,178,064
  5. Step 5: Solve for x
    x = 20,178,064/3,478
  6. Step 6: Final answer
    x = 5,801.63

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Why These Related Problems?

These problems maintain the same ratio (1.29) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.