Home / 3,790.92-5,231.46-2,112.24

Finding the Fourth Proportional to 3,790.92, 5,231.46 and 2,112.24

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Solution

The fourth proportional to 3,790.92, 5,231.46 and 2,112.24 is: 2,914.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,790.92 : 5,231.46 = 2,112.24 : x
  2. Step 2: Convert to fraction form
    3,790.92/5,231.46 = 2,112.24/x
  3. Step 3: Cross multiply
    3,790.92x = 5,231.46 × 2,112.24
  4. Step 4: Simplify right side
    3,790.92x = 11,050,099.07
  5. Step 5: Solve for x
    x = 11,050,099.07/3,790.92
  6. Step 6: Final answer
    x = 2,914.89

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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.