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Finding the Fourth Proportional to 3.62, 5 and 3.42

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Solution

The fourth proportional to 3.62, 5 and 3.42 is: 4.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3.62 : 5 = 3.42 : x
  2. Step 2: Convert to fraction form
    3.62/5 = 3.42/x
  3. Step 3: Cross multiply
    3.62x = 5 × 3.42
  4. Step 4: Simplify right side
    3.62x = 17.10
  5. Step 5: Solve for x
    x = 17.10/3.62
  6. Step 6: Final answer
    x = 4.72

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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.