Home / 4,189.90-6,286-1,268.32

Finding the Fourth Proportional to 4,189.90, 6,286 and 1,268.32

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Solution

The fourth proportional to 4,189.90, 6,286 and 1,268.32 is: 1,902.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,189.90 : 6,286 = 1,268.32 : x
  2. Step 2: Convert to fraction form
    4,189.90/6,286 = 1,268.32/x
  3. Step 3: Cross multiply
    4,189.90x = 6,286 × 1,268.32
  4. Step 4: Simplify right side
    4,189.90x = 7,972,659.52
  5. Step 5: Solve for x
    x = 7,972,659.52/4,189.90
  6. Step 6: Final answer
    x = 1,902.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.