Home / 3,876.50-5,815.40-1,795.65

Finding the Fourth Proportional to 3,876.50, 5,815.40 and 1,795.65

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Solution

The fourth proportional to 3,876.50, 5,815.40 and 1,795.65 is: 2,693.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,876.50 : 5,815.40 = 1,795.65 : x
  2. Step 2: Convert to fraction form
    3,876.50/5,815.40 = 1,795.65/x
  3. Step 3: Cross multiply
    3,876.50x = 5,815.40 × 1,795.65
  4. Step 4: Simplify right side
    3,876.50x = 10,442,414.03
  5. Step 5: Solve for x
    x = 10,442,414.03/3,876.50
  6. Step 6: Final answer
    x = 2,693.78

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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.