Home / 3,790.79-5,231.74-2,218.88

Finding the Fourth Proportional to 3,790.79, 5,231.74 and 2,218.88

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Solution

The fourth proportional to 3,790.79, 5,231.74 and 2,218.88 is: 3,062.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,790.79 : 5,231.74 = 2,218.88 : x
  2. Step 2: Convert to fraction form
    3,790.79/5,231.74 = 2,218.88/x
  3. Step 3: Cross multiply
    3,790.79x = 5,231.74 × 2,218.88
  4. Step 4: Simplify right side
    3,790.79x = 11,608,571.55
  5. Step 5: Solve for x
    x = 11,608,571.55/3,790.79
  6. Step 6: Final answer
    x = 3,062.31

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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.