Home / 3,278.25-4,916.88-1,086.71

Finding the Fourth Proportional to 3,278.25, 4,916.88 and 1,086.71

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Solution

The fourth proportional to 3,278.25, 4,916.88 and 1,086.71 is: 1,629.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,278.25 : 4,916.88 = 1,086.71 : x
  2. Step 2: Convert to fraction form
    3,278.25/4,916.88 = 1,086.71/x
  3. Step 3: Cross multiply
    3,278.25x = 4,916.88 × 1,086.71
  4. Step 4: Simplify right side
    3,278.25x = 5,343,198.08
  5. Step 5: Solve for x
    x = 5,343,198.08/3,278.25
  6. Step 6: Final answer
    x = 1,629.89

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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.