Home / 3,115.61-4,299.89-1,789.29

Finding the Fourth Proportional to 3,115.61, 4,299.89 and 1,789.29

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Solution

The fourth proportional to 3,115.61, 4,299.89 and 1,789.29 is: 2,469.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.61 : 4,299.89 = 1,789.29 : x
  2. Step 2: Convert to fraction form
    3,115.61/4,299.89 = 1,789.29/x
  3. Step 3: Cross multiply
    3,115.61x = 4,299.89 × 1,789.29
  4. Step 4: Simplify right side
    3,115.61x = 7,693,741.23
  5. Step 5: Solve for x
    x = 7,693,741.23/3,115.61
  6. Step 6: Final answer
    x = 2,469.41

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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.