Home / 3,855.22-5,782.83-2,212.81

Finding the Fourth Proportional to 3,855.22, 5,782.83 and 2,212.81

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Solution

The fourth proportional to 3,855.22, 5,782.83 and 2,212.81 is: 3,319.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,855.22 : 5,782.83 = 2,212.81 : x
  2. Step 2: Convert to fraction form
    3,855.22/5,782.83 = 2,212.81/x
  3. Step 3: Cross multiply
    3,855.22x = 5,782.83 × 2,212.81
  4. Step 4: Simplify right side
    3,855.22x = 12,796,304.05
  5. Step 5: Solve for x
    x = 12,796,304.05/3,855.22
  6. Step 6: Final answer
    x = 3,319.22

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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.