Home / 2,790.66-4,185.45-2,651.88

Finding the Fourth Proportional to 2,790.66, 4,185.45 and 2,651.88

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Solution

The fourth proportional to 2,790.66, 4,185.45 and 2,651.88 is: 3,977.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.66 : 4,185.45 = 2,651.88 : x
  2. Step 2: Convert to fraction form
    2,790.66/4,185.45 = 2,651.88/x
  3. Step 3: Cross multiply
    2,790.66x = 4,185.45 × 2,651.88
  4. Step 4: Simplify right side
    2,790.66x = 11,099,311.15
  5. Step 5: Solve for x
    x = 11,099,311.15/2,790.66
  6. Step 6: Final answer
    x = 3,977.31

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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.