Home / 3,855.35-5,320.41-2,086.97

Finding the Fourth Proportional to 3,855.35, 5,320.41 and 2,086.97

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Solution

The fourth proportional to 3,855.35, 5,320.41 and 2,086.97 is: 2,880.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,855.35 : 5,320.41 = 2,086.97 : x
  2. Step 2: Convert to fraction form
    3,855.35/5,320.41 = 2,086.97/x
  3. Step 3: Cross multiply
    3,855.35x = 5,320.41 × 2,086.97
  4. Step 4: Simplify right side
    3,855.35x = 11,103,536.06
  5. Step 5: Solve for x
    x = 11,103,536.06/3,855.35
  6. Step 6: Final answer
    x = 2,880.03

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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.