Home / 3,181.92-4,391.33-1,855.75

Finding the Fourth Proportional to 3,181.92, 4,391.33 and 1,855.75

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Solution

The fourth proportional to 3,181.92, 4,391.33 and 1,855.75 is: 2,561.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,181.92 : 4,391.33 = 1,855.75 : x
  2. Step 2: Convert to fraction form
    3,181.92/4,391.33 = 1,855.75/x
  3. Step 3: Cross multiply
    3,181.92x = 4,391.33 × 1,855.75
  4. Step 4: Simplify right side
    3,181.92x = 8,149,210.65
  5. Step 5: Solve for x
    x = 8,149,210.65/3,181.92
  6. Step 6: Final answer
    x = 2,561.10

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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.