Home / 3,115.41-4,299.29-1,789.09

Finding the Fourth Proportional to 3,115.41, 4,299.29 and 1,789.09

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Solution

The fourth proportional to 3,115.41, 4,299.29 and 1,789.09 is: 2,468.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.41 : 4,299.29 = 1,789.09 : x
  2. Step 2: Convert to fraction form
    3,115.41/4,299.29 = 1,789.09/x
  3. Step 3: Cross multiply
    3,115.41x = 4,299.29 × 1,789.09
  4. Step 4: Simplify right side
    3,115.41x = 7,691,816.75
  5. Step 5: Solve for x
    x = 7,691,816.75/3,115.41
  6. Step 6: Final answer
    x = 2,468.96

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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.