Home / 3,281.80-4,528.78-1,789.74

Finding the Fourth Proportional to 3,281.80, 4,528.78 and 1,789.74

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Solution

The fourth proportional to 3,281.80, 4,528.78 and 1,789.74 is: 2,469.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,281.80 : 4,528.78 = 1,789.74 : x
  2. Step 2: Convert to fraction form
    3,281.80/4,528.78 = 1,789.74/x
  3. Step 3: Cross multiply
    3,281.80x = 4,528.78 × 1,789.74
  4. Step 4: Simplify right side
    3,281.80x = 8,105,338.72
  5. Step 5: Solve for x
    x = 8,105,338.72/3,281.80
  6. Step 6: Final answer
    x = 2,469.79

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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.