Home / 3,489.14-4,815.20-1,917.25

Finding the Fourth Proportional to 3,489.14, 4,815.20 and 1,917.25

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Solution

The fourth proportional to 3,489.14, 4,815.20 and 1,917.25 is: 2,645.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,489.14 : 4,815.20 = 1,917.25 : x
  2. Step 2: Convert to fraction form
    3,489.14/4,815.20 = 1,917.25/x
  3. Step 3: Cross multiply
    3,489.14x = 4,815.20 × 1,917.25
  4. Step 4: Simplify right side
    3,489.14x = 9,231,942.20
  5. Step 5: Solve for x
    x = 9,231,942.20/3,489.14
  6. Step 6: Final answer
    x = 2,645.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.