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Finding the Fourth Proportional to 3,845.43, 5,765.31 and 1,995.39

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Solution

The fourth proportional to 3,845.43, 5,765.31 and 1,995.39 is: 2,991.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,845.43 : 5,765.31 = 1,995.39 : x
  2. Step 2: Convert to fraction form
    3,845.43/5,765.31 = 1,995.39/x
  3. Step 3: Cross multiply
    3,845.43x = 5,765.31 × 1,995.39
  4. Step 4: Simplify right side
    3,845.43x = 11,504,041.92
  5. Step 5: Solve for x
    x = 11,504,041.92/3,845.43
  6. Step 6: Final answer
    x = 2,991.61

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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.