Home / 3,488.82-4,814.87-1,917.21

Finding the Fourth Proportional to 3,488.82, 4,814.87 and 1,917.21

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Solution

The fourth proportional to 3,488.82, 4,814.87 and 1,917.21 is: 2,645.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,488.82 : 4,814.87 = 1,917.21 : x
  2. Step 2: Convert to fraction form
    3,488.82/4,814.87 = 1,917.21/x
  3. Step 3: Cross multiply
    3,488.82x = 4,814.87 × 1,917.21
  4. Step 4: Simplify right side
    3,488.82x = 9,231,107.33
  5. Step 5: Solve for x
    x = 9,231,107.33/3,488.82
  6. Step 6: Final answer
    x = 2,645.91

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1.5x scale

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.