Home / 3,790.80-5,231.25-2,112.27

Finding the Fourth Proportional to 3,790.80, 5,231.25 and 2,112.27

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Solution

The fourth proportional to 3,790.80, 5,231.25 and 2,112.27 is: 2,914.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,790.80 : 5,231.25 = 2,112.27 : x
  2. Step 2: Convert to fraction form
    3,790.80/5,231.25 = 2,112.27/x
  3. Step 3: Cross multiply
    3,790.80x = 5,231.25 × 2,112.27
  4. Step 4: Simplify right side
    3,790.80x = 11,049,831.02
  5. Step 5: Solve for x
    x = 11,049,831.02/3,790.80
  6. Step 6: Final answer
    x = 2,914.91

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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.