Home / 3,115.37-4,299.17-1,789.49

Finding the Fourth Proportional to 3,115.37, 4,299.17 and 1,789.49

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Solution

The fourth proportional to 3,115.37, 4,299.17 and 1,789.49 is: 2,469.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.37 : 4,299.17 = 1,789.49 : x
  2. Step 2: Convert to fraction form
    3,115.37/4,299.17 = 1,789.49/x
  3. Step 3: Cross multiply
    3,115.37x = 4,299.17 × 1,789.49
  4. Step 4: Simplify right side
    3,115.37x = 7,693,304.70
  5. Step 5: Solve for x
    x = 7,693,304.70/3,115.37
  6. Step 6: Final answer
    x = 2,469.47

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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.