Home / 3,759.78-5,188.79-2,187.75

Finding the Fourth Proportional to 3,759.78, 5,188.79 and 2,187.75

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Solution

The fourth proportional to 3,759.78, 5,188.79 and 2,187.75 is: 3,019.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,759.78 : 5,188.79 = 2,187.75 : x
  2. Step 2: Convert to fraction form
    3,759.78/5,188.79 = 2,187.75/x
  3. Step 3: Cross multiply
    3,759.78x = 5,188.79 × 2,187.75
  4. Step 4: Simplify right side
    3,759.78x = 11,351,764.38
  5. Step 5: Solve for x
    x = 11,351,764.38/3,759.78
  6. Step 6: Final answer
    x = 3,019.26

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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.