Home / 3,788.64-5,675.67-2,811.78

Finding the Fourth Proportional to 3,788.64, 5,675.67 and 2,811.78

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Solution

The fourth proportional to 3,788.64, 5,675.67 and 2,811.78 is: 4,212.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,788.64 : 5,675.67 = 2,811.78 : x
  2. Step 2: Convert to fraction form
    3,788.64/5,675.67 = 2,811.78/x
  3. Step 3: Cross multiply
    3,788.64x = 5,675.67 × 2,811.78
  4. Step 4: Simplify right side
    3,788.64x = 15,958,735.39
  5. Step 5: Solve for x
    x = 15,958,735.39/3,788.64
  6. Step 6: Final answer
    x = 4,212.26

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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.