Home / 3,115.67-4,299.89-1,789.83

Finding the Fourth Proportional to 3,115.67, 4,299.89 and 1,789.83

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Solution

The fourth proportional to 3,115.67, 4,299.89 and 1,789.83 is: 2,470.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.67 : 4,299.89 = 1,789.83 : x
  2. Step 2: Convert to fraction form
    3,115.67/4,299.89 = 1,789.83/x
  3. Step 3: Cross multiply
    3,115.67x = 4,299.89 × 1,789.83
  4. Step 4: Simplify right side
    3,115.67x = 7,696,063.17
  5. Step 5: Solve for x
    x = 7,696,063.17/3,115.67
  6. Step 6: Final answer
    x = 2,470.12

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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.