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Finding the Third Proportional to 4,350 and 6,920

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Solution

The third proportional to 4,350 and 6,920 is: 11,008.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,350 : 6,920 = 6,920 : x
  2. Step 2: Convert to fraction form
    4,350/6,920 = 6,920/x
  3. Step 3: Cross multiply
    4,350x = 6,920 × 6,920
  4. Step 4: Simplify right side
    4,350x = 47,886,400
  5. Step 5: Solve for x
    x = 47,886,400/4,350
  6. Step 6: Final answer
    x = 11,008.37

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.