Home / 3,285.45-4,919.40-1,891.71

Finding the Fourth Proportional to 3,285.45, 4,919.40 and 1,891.71

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Solution

The fourth proportional to 3,285.45, 4,919.40 and 1,891.71 is: 2,832.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,285.45 : 4,919.40 = 1,891.71 : x
  2. Step 2: Convert to fraction form
    3,285.45/4,919.40 = 1,891.71/x
  3. Step 3: Cross multiply
    3,285.45x = 4,919.40 × 1,891.71
  4. Step 4: Simplify right side
    3,285.45x = 9,306,078.17
  5. Step 5: Solve for x
    x = 9,306,078.17/3,285.45
  6. Step 6: Final answer
    x = 2,832.51

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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.