Home / 3,185.41-4,778.33-845.38

Finding the Fourth Proportional to 3,185.41, 4,778.33 and 845.38

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Solution

The fourth proportional to 3,185.41, 4,778.33 and 845.38 is: 1,268.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,185.41 : 4,778.33 = 845.38 : x
  2. Step 2: Convert to fraction form
    3,185.41/4,778.33 = 845.38/x
  3. Step 3: Cross multiply
    3,185.41x = 4,778.33 × 845.38
  4. Step 4: Simplify right side
    3,185.41x = 4,039,488.44
  5. Step 5: Solve for x
    x = 4,039,488.44/3,185.41
  6. Step 6: Final answer
    x = 1,268.12

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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.