Home / 3,785.82-5,224.39-2,107.19

Finding the Fourth Proportional to 3,785.82, 5,224.39 and 2,107.19

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Solution

The fourth proportional to 3,785.82, 5,224.39 and 2,107.19 is: 2,907.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,785.82 : 5,224.39 = 2,107.19 : x
  2. Step 2: Convert to fraction form
    3,785.82/5,224.39 = 2,107.19/x
  3. Step 3: Cross multiply
    3,785.82x = 5,224.39 × 2,107.19
  4. Step 4: Simplify right side
    3,785.82x = 11,008,782.36
  5. Step 5: Solve for x
    x = 11,008,782.36/3,785.82
  6. Step 6: Final answer
    x = 2,907.90

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Half scale
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Double scale
Find fourth proportional to 3,786.82, 5,225.77 and 2,108.19
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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.