Home / 3,778.36-5,212.68-2,785.99

Finding the Fourth Proportional to 3,778.36, 5,212.68 and 2,785.99

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Solution

The fourth proportional to 3,778.36, 5,212.68 and 2,785.99 is: 3,843.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,778.36 : 5,212.68 = 2,785.99 : x
  2. Step 2: Convert to fraction form
    3,778.36/5,212.68 = 2,785.99/x
  3. Step 3: Cross multiply
    3,778.36x = 5,212.68 × 2,785.99
  4. Step 4: Simplify right side
    3,778.36x = 14,522,474.35
  5. Step 5: Solve for x
    x = 14,522,474.35/3,778.36
  6. Step 6: Final answer
    x = 3,843.59

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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.