Home / 5,278.14-7,917.39-1,382.85

Finding the Fourth Proportional to 5,278.14, 7,917.39 and 1,382.85

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Solution

The fourth proportional to 5,278.14, 7,917.39 and 1,382.85 is: 2,074.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.14 : 7,917.39 = 1,382.85 : x
  2. Step 2: Convert to fraction form
    5,278.14/7,917.39 = 1,382.85/x
  3. Step 3: Cross multiply
    5,278.14x = 7,917.39 × 1,382.85
  4. Step 4: Simplify right side
    5,278.14x = 10,948,562.76
  5. Step 5: Solve for x
    x = 10,948,562.76/5,278.14
  6. Step 6: Final answer
    x = 2,074.32

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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.