Home / 3,778.12-5,662.38-2,778.76

Finding the Fourth Proportional to 3,778.12, 5,662.38 and 2,778.76

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Solution

The fourth proportional to 3,778.12, 5,662.38 and 2,778.76 is: 4,164.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,778.12 : 5,662.38 = 2,778.76 : x
  2. Step 2: Convert to fraction form
    3,778.12/5,662.38 = 2,778.76/x
  3. Step 3: Cross multiply
    3,778.12x = 5,662.38 × 2,778.76
  4. Step 4: Simplify right side
    3,778.12x = 15,734,395.05
  5. Step 5: Solve for x
    x = 15,734,395.05/3,778.12
  6. Step 6: Final answer
    x = 4,164.61

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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.