Home / 3,489.20-4,814.99-1,917.29

Finding the Fourth Proportional to 3,489.20, 4,814.99 and 1,917.29

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Solution

The fourth proportional to 3,489.20, 4,814.99 and 1,917.29 is: 2,645.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,489.20 : 4,814.99 = 1,917.29 : x
  2. Step 2: Convert to fraction form
    3,489.20/4,814.99 = 1,917.29/x
  3. Step 3: Cross multiply
    3,489.20x = 4,814.99 × 1,917.29
  4. Step 4: Simplify right side
    3,489.20x = 9,231,698.52
  5. Step 5: Solve for x
    x = 9,231,698.52/3,489.20
  6. Step 6: Final answer
    x = 2,645.80

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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.