Home / 3,185.86-4,778.78-2,089.97

Finding the Fourth Proportional to 3,185.86, 4,778.78 and 2,089.97

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Solution

The fourth proportional to 3,185.86, 4,778.78 and 2,089.97 is: 3,134.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,185.86 : 4,778.78 = 2,089.97 : x
  2. Step 2: Convert to fraction form
    3,185.86/4,778.78 = 2,089.97/x
  3. Step 3: Cross multiply
    3,185.86x = 4,778.78 × 2,089.97
  4. Step 4: Simplify right side
    3,185.86x = 9,987,482.94
  5. Step 5: Solve for x
    x = 9,987,482.94/3,185.86
  6. Step 6: Final answer
    x = 3,134.95

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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.