Home / 2,115.45-2,919.32-1,183.95

Finding the Fourth Proportional to 2,115.45, 2,919.32 and 1,183.95

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Solution

The fourth proportional to 2,115.45, 2,919.32 and 1,183.95 is: 1,633.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.45 : 2,919.32 = 1,183.95 : x
  2. Step 2: Convert to fraction form
    2,115.45/2,919.32 = 1,183.95/x
  3. Step 3: Cross multiply
    2,115.45x = 2,919.32 × 1,183.95
  4. Step 4: Simplify right side
    2,115.45x = 3,456,338.38
  5. Step 5: Solve for x
    x = 3,456,338.38/2,115.45
  6. Step 6: Final answer
    x = 1,633.85

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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.