Home / 3,728.69-5,145.29-2,195.37

Finding the Fourth Proportional to 3,728.69, 5,145.29 and 2,195.37

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Solution

The fourth proportional to 3,728.69, 5,145.29 and 2,195.37 is: 3,029.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,728.69 : 5,145.29 = 2,195.37 : x
  2. Step 2: Convert to fraction form
    3,728.69/5,145.29 = 2,195.37/x
  3. Step 3: Cross multiply
    3,728.69x = 5,145.29 × 2,195.37
  4. Step 4: Simplify right side
    3,728.69x = 11,295,804.33
  5. Step 5: Solve for x
    x = 11,295,804.33/3,728.69
  6. Step 6: Final answer
    x = 3,029.43

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Half scale
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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.