Home / 3,790.32-5,229.60-2,218.80

Finding the Fourth Proportional to 3,790.32, 5,229.60 and 2,218.80

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Solution

The fourth proportional to 3,790.32, 5,229.60 and 2,218.80 is: 3,061.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,790.32 : 5,229.60 = 2,218.80 : x
  2. Step 2: Convert to fraction form
    3,790.32/5,229.60 = 2,218.80/x
  3. Step 3: Cross multiply
    3,790.32x = 5,229.60 × 2,218.80
  4. Step 4: Simplify right side
    3,790.32x = 11,603,436.48
  5. Step 5: Solve for x
    x = 11,603,436.48/3,790.32
  6. Step 6: Final answer
    x = 3,061.33

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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.