Home / 3,845.28-5,767.86-1,380.26

Finding the Fourth Proportional to 3,845.28, 5,767.86 and 1,380.26

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Solution

The fourth proportional to 3,845.28, 5,767.86 and 1,380.26 is: 2,070.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,845.28 : 5,767.86 = 1,380.26 : x
  2. Step 2: Convert to fraction form
    3,845.28/5,767.86 = 1,380.26/x
  3. Step 3: Cross multiply
    3,845.28x = 5,767.86 × 1,380.26
  4. Step 4: Simplify right side
    3,845.28x = 7,961,146.44
  5. Step 5: Solve for x
    x = 7,961,146.44/3,845.28
  6. Step 6: Final answer
    x = 2,070.37

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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.