Home / 3,115.80-4,299.94-1,789.92

Finding the Fourth Proportional to 3,115.80, 4,299.94 and 1,789.92

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Solution

The fourth proportional to 3,115.80, 4,299.94 and 1,789.92 is: 2,470.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.80 : 4,299.94 = 1,789.92 : x
  2. Step 2: Convert to fraction form
    3,115.80/4,299.94 = 1,789.92/x
  3. Step 3: Cross multiply
    3,115.80x = 4,299.94 × 1,789.92
  4. Step 4: Simplify right side
    3,115.80x = 7,696,550.84
  5. Step 5: Solve for x
    x = 7,696,550.84/3,115.80
  6. Step 6: Final answer
    x = 2,470.17

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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.