Home / 3,858.45-5,786.46-2,215.77

Finding the Fourth Proportional to 3,858.45, 5,786.46 and 2,215.77

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Solution

The fourth proportional to 3,858.45, 5,786.46 and 2,215.77 is: 3,322.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,858.45 : 5,786.46 = 2,215.77 : x
  2. Step 2: Convert to fraction form
    3,858.45/5,786.46 = 2,215.77/x
  3. Step 3: Cross multiply
    3,858.45x = 5,786.46 × 2,215.77
  4. Step 4: Simplify right side
    3,858.45x = 12,821,464.47
  5. Step 5: Solve for x
    x = 12,821,464.47/3,858.45
  6. Step 6: Final answer
    x = 3,322.96

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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.