Home / 3,205.85-4,424.31-1,789.79

Finding the Fourth Proportional to 3,205.85, 4,424.31 and 1,789.79

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Solution

The fourth proportional to 3,205.85, 4,424.31 and 1,789.79 is: 2,470.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,205.85 : 4,424.31 = 1,789.79 : x
  2. Step 2: Convert to fraction form
    3,205.85/4,424.31 = 1,789.79/x
  3. Step 3: Cross multiply
    3,205.85x = 4,424.31 × 1,789.79
  4. Step 4: Simplify right side
    3,205.85x = 7,918,563.67
  5. Step 5: Solve for x
    x = 7,918,563.67/3,205.85
  6. Step 6: Final answer
    x = 2,470.04

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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.