Home / 3,185.85-4,778.77-2,089.96

Finding the Fourth Proportional to 3,185.85, 4,778.77 and 2,089.96

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Solution

The fourth proportional to 3,185.85, 4,778.77 and 2,089.96 is: 3,134.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,185.85 : 4,778.77 = 2,089.96 : x
  2. Step 2: Convert to fraction form
    3,185.85/4,778.77 = 2,089.96/x
  3. Step 3: Cross multiply
    3,185.85x = 4,778.77 × 2,089.96
  4. Step 4: Simplify right side
    3,185.85x = 9,987,414.26
  5. Step 5: Solve for x
    x = 9,987,414.26/3,185.85
  6. Step 6: Final answer
    x = 3,134.93

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1.5x scale

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.