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Finding the Third Proportional to 6,220 and 6,772

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Solution

The third proportional to 6,220 and 6,772 is: 7,372.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,220 : 6,772 = 6,772 : x
  2. Step 2: Convert to fraction form
    6,220/6,772 = 6,772/x
  3. Step 3: Cross multiply
    6,220x = 6,772 × 6,772
  4. Step 4: Simplify right side
    6,220x = 45,859,984
  5. Step 5: Solve for x
    x = 45,859,984/6,220
  6. Step 6: Final answer
    x = 7,372.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.