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Finding the Fourth Proportional to 6.35, 8.71 and 6.12

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Solution

The fourth proportional to 6.35, 8.71 and 6.12 is: 8.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    6.35 : 8.71 = 6.12 : x
  2. Step 2: Convert to fraction form
    6.35/8.71 = 6.12/x
  3. Step 3: Cross multiply
    6.35x = 8.71 × 6.12
  4. Step 4: Simplify right side
    6.35x = 53.31
  5. Step 5: Solve for x
    x = 53.31/6.35
  6. Step 6: Final answer
    x = 8.39

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.