Home / 3,790.78-5,231.46-2,197.60

Finding the Fourth Proportional to 3,790.78, 5,231.46 and 2,197.60

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Solution

The fourth proportional to 3,790.78, 5,231.46 and 2,197.60 is: 3,032.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,790.78 : 5,231.46 = 2,197.60 : x
  2. Step 2: Convert to fraction form
    3,790.78/5,231.46 = 2,197.60/x
  3. Step 3: Cross multiply
    3,790.78x = 5,231.46 × 2,197.60
  4. Step 4: Simplify right side
    3,790.78x = 11,496,656.50
  5. Step 5: Solve for x
    x = 11,496,656.50/3,790.78
  6. Step 6: Final answer
    x = 3,032.79

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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.