Home / 3,788.82-5,222.61-2,790.90

Finding the Fourth Proportional to 3,788.82, 5,222.61 and 2,790.90

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Solution

The fourth proportional to 3,788.82, 5,222.61 and 2,790.90 is: 3,847.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,788.82 : 5,222.61 = 2,790.90 : x
  2. Step 2: Convert to fraction form
    3,788.82/5,222.61 = 2,790.90/x
  3. Step 3: Cross multiply
    3,788.82x = 5,222.61 × 2,790.90
  4. Step 4: Simplify right side
    3,788.82x = 14,575,782.25
  5. Step 5: Solve for x
    x = 14,575,782.25/3,788.82
  6. Step 6: Final answer
    x = 3,847.05

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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.