Home / 3,785.40-5,669.82-2,686.44

Finding the Fourth Proportional to 3,785.40, 5,669.82 and 2,686.44

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Solution

The fourth proportional to 3,785.40, 5,669.82 and 2,686.44 is: 4,023.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,785.40 : 5,669.82 = 2,686.44 : x
  2. Step 2: Convert to fraction form
    3,785.40/5,669.82 = 2,686.44/x
  3. Step 3: Cross multiply
    3,785.40x = 5,669.82 × 2,686.44
  4. Step 4: Simplify right side
    3,785.40x = 15,231,631.24
  5. Step 5: Solve for x
    x = 15,231,631.24/3,785.40
  6. Step 6: Final answer
    x = 4,023.78

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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.