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Finding the Fourth Proportional to 3,961.48, 5,461.02 and 3,015.62

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Solution

The fourth proportional to 3,961.48, 5,461.02 and 3,015.62 is: 4,157.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,961.48 : 5,461.02 = 3,015.62 : x
  2. Step 2: Convert to fraction form
    3,961.48/5,461.02 = 3,015.62/x
  3. Step 3: Cross multiply
    3,961.48x = 5,461.02 × 3,015.62
  4. Step 4: Simplify right side
    3,961.48x = 16,468,367.25
  5. Step 5: Solve for x
    x = 16,468,367.25/3,961.48
  6. Step 6: Final answer
    x = 4,157.12

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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.