Home / 3,858.39-5,782.41-2,005.65

Finding the Fourth Proportional to 3,858.39, 5,782.41 and 2,005.65

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Solution

The fourth proportional to 3,858.39, 5,782.41 and 2,005.65 is: 3,005.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,858.39 : 5,782.41 = 2,005.65 : x
  2. Step 2: Convert to fraction form
    3,858.39/5,782.41 = 2,005.65/x
  3. Step 3: Cross multiply
    3,858.39x = 5,782.41 × 2,005.65
  4. Step 4: Simplify right side
    3,858.39x = 11,597,490.62
  5. Step 5: Solve for x
    x = 11,597,490.62/3,858.39
  6. Step 6: Final answer
    x = 3,005.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.