Home / 3,078.82-4,620.84-1,231.24

Finding the Fourth Proportional to 3,078.82, 4,620.84 and 1,231.24

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Solution

The fourth proportional to 3,078.82, 4,620.84 and 1,231.24 is: 1,847.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.82 : 4,620.84 = 1,231.24 : x
  2. Step 2: Convert to fraction form
    3,078.82/4,620.84 = 1,231.24/x
  3. Step 3: Cross multiply
    3,078.82x = 4,620.84 × 1,231.24
  4. Step 4: Simplify right side
    3,078.82x = 5,689,363.04
  5. Step 5: Solve for x
    x = 5,689,363.04/3,078.82
  6. Step 6: Final answer
    x = 1,847.90

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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.