Home / 2,789.82-3,849.99-1,671.60

Finding the Fourth Proportional to 2,789.82, 3,849.99 and 1,671.60

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Solution

The fourth proportional to 2,789.82, 3,849.99 and 1,671.60 is: 2,306.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,789.82 : 3,849.99 = 1,671.60 : x
  2. Step 2: Convert to fraction form
    2,789.82/3,849.99 = 1,671.60/x
  3. Step 3: Cross multiply
    2,789.82x = 3,849.99 × 1,671.60
  4. Step 4: Simplify right side
    2,789.82x = 6,435,643.28
  5. Step 5: Solve for x
    x = 6,435,643.28/2,789.82
  6. Step 6: Final answer
    x = 2,306.83

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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.