Home / 3,966.10-5,471.38-2,787.85

Finding the Fourth Proportional to 3,966.10, 5,471.38 and 2,787.85

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Solution

The fourth proportional to 3,966.10, 5,471.38 and 2,787.85 is: 3,845.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,966.10 : 5,471.38 = 2,787.85 : x
  2. Step 2: Convert to fraction form
    3,966.10/5,471.38 = 2,787.85/x
  3. Step 3: Cross multiply
    3,966.10x = 5,471.38 × 2,787.85
  4. Step 4: Simplify right side
    3,966.10x = 15,253,386.73
  5. Step 5: Solve for x
    x = 15,253,386.73/3,966.10
  6. Step 6: Final answer
    x = 3,845.94

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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.