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Finding the Third Proportional to 6,220 and 13,280

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Solution

The third proportional to 6,220 and 13,280 is: 28,353.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,220 : 13,280 = 13,280 : x
  2. Step 2: Convert to fraction form
    6,220/13,280 = 13,280/x
  3. Step 3: Cross multiply
    6,220x = 13,280 × 13,280
  4. Step 4: Simplify right side
    6,220x = 176,358,400
  5. Step 5: Solve for x
    x = 176,358,400/6,220
  6. Step 6: Final answer
    x = 28,353.44

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.