Home / 3,786.75-5,221.26-2,671.38

Finding the Fourth Proportional to 3,786.75, 5,221.26 and 2,671.38

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Solution

The fourth proportional to 3,786.75, 5,221.26 and 2,671.38 is: 3,683.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,786.75 : 5,221.26 = 2,671.38 : x
  2. Step 2: Convert to fraction form
    3,786.75/5,221.26 = 2,671.38/x
  3. Step 3: Cross multiply
    3,786.75x = 5,221.26 × 2,671.38
  4. Step 4: Simplify right side
    3,786.75x = 13,947,969.54
  5. Step 5: Solve for x
    x = 13,947,969.54/3,786.75
  6. Step 6: Final answer
    x = 3,683.36

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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.