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Finding the Third Proportional to 4.22 and 6.12

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Solution

The third proportional to 4.22 and 6.12 is: 8.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    4.22 : 6.12 = 6.12 : x
  2. Step 2: Convert to fraction form
    4.22/6.12 = 6.12/x
  3. Step 3: Cross multiply
    4.22x = 6.12 × 6.12
  4. Step 4: Simplify right side
    4.22x = 37.42
  5. Step 5: Solve for x
    x = 37.42/4.22
  6. Step 6: Final answer
    x = 8.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.