Home / 3,879.77-5,355.04-2,202.16

Finding the Fourth Proportional to 3,879.77, 5,355.04 and 2,202.16

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Solution

The fourth proportional to 3,879.77, 5,355.04 and 2,202.16 is: 3,039.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879.77 : 5,355.04 = 2,202.16 : x
  2. Step 2: Convert to fraction form
    3,879.77/5,355.04 = 2,202.16/x
  3. Step 3: Cross multiply
    3,879.77x = 5,355.04 × 2,202.16
  4. Step 4: Simplify right side
    3,879.77x = 11,792,659.03
  5. Step 5: Solve for x
    x = 11,792,659.03/3,879.77
  6. Step 6: Final answer
    x = 3,039.52

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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.