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Finding the Fourth Proportional to 4.39, 6 and 4.31

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Solution

The fourth proportional to 4.39, 6 and 4.31 is: 5.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4.39 : 6 = 4.31 : x
  2. Step 2: Convert to fraction form
    4.39/6 = 4.31/x
  3. Step 3: Cross multiply
    4.39x = 6 × 4.31
  4. Step 4: Simplify right side
    4.39x = 25.83
  5. Step 5: Solve for x
    x = 25.83/4.39
  6. Step 6: Final answer
    x = 5.89

Related Problems

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Double scale
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Similar ratio
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1.5x scale

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.