Home / 2,872.94-3,963.78-1,693.76

Finding the Fourth Proportional to 2,872.94, 3,963.78 and 1,693.76

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Solution

The fourth proportional to 2,872.94, 3,963.78 and 1,693.76 is: 2,336.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,872.94 : 3,963.78 = 1,693.76 : x
  2. Step 2: Convert to fraction form
    2,872.94/3,963.78 = 1,693.76/x
  3. Step 3: Cross multiply
    2,872.94x = 3,963.78 × 1,693.76
  4. Step 4: Simplify right side
    2,872.94x = 6,713,692.01
  5. Step 5: Solve for x
    x = 6,713,692.01/2,872.94
  6. Step 6: Final answer
    x = 2,336.87

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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.