Home / 3,619.71-5,427-1,511.28

Finding the Fourth Proportional to 3,619.71, 5,427 and 1,511.28

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Solution

The fourth proportional to 3,619.71, 5,427 and 1,511.28 is: 2,265.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.71 : 5,427 = 1,511.28 : x
  2. Step 2: Convert to fraction form
    3,619.71/5,427 = 1,511.28/x
  3. Step 3: Cross multiply
    3,619.71x = 5,427 × 1,511.28
  4. Step 4: Simplify right side
    3,619.71x = 8,201,716.56
  5. Step 5: Solve for x
    x = 8,201,716.56/3,619.71
  6. Step 6: Final answer
    x = 2,265.85

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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.