Home / 3,185.16-4,394.78-2,005.80

Finding the Fourth Proportional to 3,185.16, 4,394.78 and 2,005.80

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Solution

The fourth proportional to 3,185.16, 4,394.78 and 2,005.80 is: 2,767.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,185.16 : 4,394.78 = 2,005.80 : x
  2. Step 2: Convert to fraction form
    3,185.16/4,394.78 = 2,005.80/x
  3. Step 3: Cross multiply
    3,185.16x = 4,394.78 × 2,005.80
  4. Step 4: Simplify right side
    3,185.16x = 8,815,049.72
  5. Step 5: Solve for x
    x = 8,815,049.72/3,185.16
  6. Step 6: Final answer
    x = 2,767.54

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1.5x scale

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.