Home / 3,907.18-5,383.92-2,785.73

Finding the Fourth Proportional to 3,907.18, 5,383.92 and 2,785.73

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Solution

The fourth proportional to 3,907.18, 5,383.92 and 2,785.73 is: 3,838.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,907.18 : 5,383.92 = 2,785.73 : x
  2. Step 2: Convert to fraction form
    3,907.18/5,383.92 = 2,785.73/x
  3. Step 3: Cross multiply
    3,907.18x = 5,383.92 × 2,785.73
  4. Step 4: Simplify right side
    3,907.18x = 14,998,160.92
  5. Step 5: Solve for x
    x = 14,998,160.92/3,907.18
  6. Step 6: Final answer
    x = 3,838.62

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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.