Home / 3,855.85-5,321.04-2,087.44

Finding the Fourth Proportional to 3,855.85, 5,321.04 and 2,087.44

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Solution

The fourth proportional to 3,855.85, 5,321.04 and 2,087.44 is: 2,880.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,855.85 : 5,321.04 = 2,087.44 : x
  2. Step 2: Convert to fraction form
    3,855.85/5,321.04 = 2,087.44/x
  3. Step 3: Cross multiply
    3,855.85x = 5,321.04 × 2,087.44
  4. Step 4: Simplify right side
    3,855.85x = 11,107,351.74
  5. Step 5: Solve for x
    x = 11,107,351.74/3,855.85
  6. Step 6: Final answer
    x = 2,880.65

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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.