Home / 2,801.91-4,198.95-2,107.77

Finding the Fourth Proportional to 2,801.91, 4,198.95 and 2,107.77

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Solution

The fourth proportional to 2,801.91, 4,198.95 and 2,107.77 is: 3,158.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,801.91 : 4,198.95 = 2,107.77 : x
  2. Step 2: Convert to fraction form
    2,801.91/4,198.95 = 2,107.77/x
  3. Step 3: Cross multiply
    2,801.91x = 4,198.95 × 2,107.77
  4. Step 4: Simplify right side
    2,801.91x = 8,850,420.84
  5. Step 5: Solve for x
    x = 8,850,420.84/2,801.91
  6. Step 6: Final answer
    x = 3,158.71

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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.