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Finding the Third Proportional to 6,128 and 6,680

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Solution

The third proportional to 6,128 and 6,680 is: 7,281.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,128 : 6,680 = 6,680 : x
  2. Step 2: Convert to fraction form
    6,128/6,680 = 6,680/x
  3. Step 3: Cross multiply
    6,128x = 6,680 × 6,680
  4. Step 4: Simplify right side
    6,128x = 44,622,400
  5. Step 5: Solve for x
    x = 44,622,400/6,128
  6. Step 6: Final answer
    x = 7,281.72

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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.