Home / 3,845.75-5,769.15-1,380.05

Finding the Fourth Proportional to 3,845.75, 5,769.15 and 1,380.05

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Solution

The fourth proportional to 3,845.75, 5,769.15 and 1,380.05 is: 2,070.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,845.75 : 5,769.15 = 1,380.05 : x
  2. Step 2: Convert to fraction form
    3,845.75/5,769.15 = 1,380.05/x
  3. Step 3: Cross multiply
    3,845.75x = 5,769.15 × 1,380.05
  4. Step 4: Simplify right side
    3,845.75x = 7,961,715.46
  5. Step 5: Solve for x
    x = 7,961,715.46/3,845.75
  6. Step 6: Final answer
    x = 2,070.26

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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.