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Finding the Fourth Proportional to 3,961.22, 5,467.12 and 3,015.50

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Solution

The fourth proportional to 3,961.22, 5,467.12 and 3,015.50 is: 4,161.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,961.22 : 5,467.12 = 3,015.50 : x
  2. Step 2: Convert to fraction form
    3,961.22/5,467.12 = 3,015.50/x
  3. Step 3: Cross multiply
    3,961.22x = 5,467.12 × 3,015.50
  4. Step 4: Simplify right side
    3,961.22x = 16,486,100.36
  5. Step 5: Solve for x
    x = 16,486,100.36/3,961.22
  6. Step 6: Final answer
    x = 4,161.87

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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.