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Finding the Fourth Proportional to 3,995.56, 5,993.82 and 1,398.12

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Solution

The fourth proportional to 3,995.56, 5,993.82 and 1,398.12 is: 2,097.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,995.56 : 5,993.82 = 1,398.12 : x
  2. Step 2: Convert to fraction form
    3,995.56/5,993.82 = 1,398.12/x
  3. Step 3: Cross multiply
    3,995.56x = 5,993.82 × 1,398.12
  4. Step 4: Simplify right side
    3,995.56x = 8,380,079.62
  5. Step 5: Solve for x
    x = 8,380,079.62/3,995.56
  6. Step 6: Final answer
    x = 2,097.35

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