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Finding the Fourth Proportional to 3,856.44, 5,318.10 and 3,794.88

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Solution

The fourth proportional to 3,856.44, 5,318.10 and 3,794.88 is: 5,233.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,856.44 : 5,318.10 = 3,794.88 : x
  2. Step 2: Convert to fraction form
    3,856.44/5,318.10 = 3,794.88/x
  3. Step 3: Cross multiply
    3,856.44x = 5,318.10 × 3,794.88
  4. Step 4: Simplify right side
    3,856.44x = 20,181,551.33
  5. Step 5: Solve for x
    x = 20,181,551.33/3,856.44
  6. Step 6: Final answer
    x = 5,233.21

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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.