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Finding the Fourth Proportional to 3,974.94, 5,963.85 and 1,921.50

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Solution

The fourth proportional to 3,974.94, 5,963.85 and 1,921.50 is: 2,882.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,974.94 : 5,963.85 = 1,921.50 : x
  2. Step 2: Convert to fraction form
    3,974.94/5,963.85 = 1,921.50/x
  3. Step 3: Cross multiply
    3,974.94x = 5,963.85 × 1,921.50
  4. Step 4: Simplify right side
    3,974.94x = 11,459,537.78
  5. Step 5: Solve for x
    x = 11,459,537.78/3,974.94
  6. Step 6: Final answer
    x = 2,882.95

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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.