Home / 4,919.68-7,380.87-3,689.47

Finding the Fourth Proportional to 4,919.68, 7,380.87 and 3,689.47

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Solution

The fourth proportional to 4,919.68, 7,380.87 and 3,689.47 is: 5,535.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,919.68 : 7,380.87 = 3,689.47 : x
  2. Step 2: Convert to fraction form
    4,919.68/7,380.87 = 3,689.47/x
  3. Step 3: Cross multiply
    4,919.68x = 7,380.87 × 3,689.47
  4. Step 4: Simplify right side
    4,919.68x = 27,231,498.44
  5. Step 5: Solve for x
    x = 27,231,498.44/4,919.68
  6. Step 6: Final answer
    x = 5,535.22

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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.