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Finding the Fourth Proportional to 4.13, 6.19 and 2.12

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Solution

The fourth proportional to 4.13, 6.19 and 2.12 is: 3.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    4.13 : 6.19 = 2.12 : x
  2. Step 2: Convert to fraction form
    4.13/6.19 = 2.12/x
  3. Step 3: Cross multiply
    4.13x = 6.19 × 2.12
  4. Step 4: Simplify right side
    4.13x = 13.08
  5. Step 5: Solve for x
    x = 13.08/4.13
  6. Step 6: Final answer
    x = 3.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.