Home / 2,790.41-3,850.52-2,005.70

Finding the Fourth Proportional to 2,790.41, 3,850.52 and 2,005.70

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Solution

The fourth proportional to 2,790.41, 3,850.52 and 2,005.70 is: 2,767.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.41 : 3,850.52 = 2,005.70 : x
  2. Step 2: Convert to fraction form
    2,790.41/3,850.52 = 2,005.70/x
  3. Step 3: Cross multiply
    2,790.41x = 3,850.52 × 2,005.70
  4. Step 4: Simplify right side
    2,790.41x = 7,722,958.68
  5. Step 5: Solve for x
    x = 7,722,958.68/2,790.41
  6. Step 6: Final answer
    x = 2,767.68

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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.