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Finding the Third Proportional to 4,214 and 9,220

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Solution

The third proportional to 4,214 and 9,220 is: 20,172.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,214 : 9,220 = 9,220 : x
  2. Step 2: Convert to fraction form
    4,214/9,220 = 9,220/x
  3. Step 3: Cross multiply
    4,214x = 9,220 × 9,220
  4. Step 4: Simplify right side
    4,214x = 85,008,400
  5. Step 5: Solve for x
    x = 85,008,400/4,214
  6. Step 6: Final answer
    x = 20,172.85

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.