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Finding the Third Proportional to 4.19 and 9.19

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Solution

The third proportional to 4.19 and 9.19 is: 20.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    4.19 : 9.19 = 9.19 : x
  2. Step 2: Convert to fraction form
    4.19/9.19 = 9.19/x
  3. Step 3: Cross multiply
    4.19x = 9.19 × 9.19
  4. Step 4: Simplify right side
    4.19x = 84.37
  5. Step 5: Solve for x
    x = 84.37/4.19
  6. Step 6: Final answer
    x = 20.13

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1.5x scale

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.