Home / 5,278.09-7,917.33-1,382.38

Finding the Fourth Proportional to 5,278.09, 7,917.33 and 1,382.38

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Solution

The fourth proportional to 5,278.09, 7,917.33 and 1,382.38 is: 2,073.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.09 : 7,917.33 = 1,382.38 : x
  2. Step 2: Convert to fraction form
    5,278.09/7,917.33 = 1,382.38/x
  3. Step 3: Cross multiply
    5,278.09x = 7,917.33 × 1,382.38
  4. Step 4: Simplify right side
    5,278.09x = 10,944,758.65
  5. Step 5: Solve for x
    x = 10,944,758.65/5,278.09
  6. Step 6: Final answer
    x = 2,073.62

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1.5x scale

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.