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Finding the Fourth Proportional to 4.38, 6 and 4.28

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Solution

The fourth proportional to 4.38, 6 and 4.28 is: 5.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    4.38 : 6 = 4.28 : x
  2. Step 2: Convert to fraction form
    4.38/6 = 4.28/x
  3. Step 3: Cross multiply
    4.38x = 6 × 4.28
  4. Step 4: Simplify right side
    4.38x = 25.65
  5. Step 5: Solve for x
    x = 25.65/4.38
  6. Step 6: Final answer
    x = 5.86

Related Problems

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Double scale
Find fourth proportional to 5.38, 7.37 and 5.28
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.