Home / 3,868.75-5,338.94-2,190.11

Finding the Fourth Proportional to 3,868.75, 5,338.94 and 2,190.11

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Solution

The fourth proportional to 3,868.75, 5,338.94 and 2,190.11 is: 3,022.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,868.75 : 5,338.94 = 2,190.11 : x
  2. Step 2: Convert to fraction form
    3,868.75/5,338.94 = 2,190.11/x
  3. Step 3: Cross multiply
    3,868.75x = 5,338.94 × 2,190.11
  4. Step 4: Simplify right side
    3,868.75x = 11,692,879.45
  5. Step 5: Solve for x
    x = 11,692,879.45/3,868.75
  6. Step 6: Final answer
    x = 3,022.39

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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.