Home / 3,902.58-5,380.83-2,958.12

Finding the Fourth Proportional to 3,902.58, 5,380.83 and 2,958.12

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Solution

The fourth proportional to 3,902.58, 5,380.83 and 2,958.12 is: 4,078.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,902.58 : 5,380.83 = 2,958.12 : x
  2. Step 2: Convert to fraction form
    3,902.58/5,380.83 = 2,958.12/x
  3. Step 3: Cross multiply
    3,902.58x = 5,380.83 × 2,958.12
  4. Step 4: Simplify right side
    3,902.58x = 15,917,140.84
  5. Step 5: Solve for x
    x = 15,917,140.84/3,902.58
  6. Step 6: Final answer
    x = 4,078.62

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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.