Home / 3,868.80-5,338.96-2,190.24

Finding the Fourth Proportional to 3,868.80, 5,338.96 and 2,190.24

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Solution

The fourth proportional to 3,868.80, 5,338.96 and 2,190.24 is: 3,022.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,868.80 : 5,338.96 = 2,190.24 : x
  2. Step 2: Convert to fraction form
    3,868.80/5,338.96 = 2,190.24/x
  3. Step 3: Cross multiply
    3,868.80x = 5,338.96 × 2,190.24
  4. Step 4: Simplify right side
    3,868.80x = 11,693,603.75
  5. Step 5: Solve for x
    x = 11,693,603.75/3,868.80
  6. Step 6: Final answer
    x = 3,022.54

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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.