Home / 3,979.75-5,488.70-3,351.74

Finding the Fourth Proportional to 3,979.75, 5,488.70 and 3,351.74

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Solution

The fourth proportional to 3,979.75, 5,488.70 and 3,351.74 is: 4,622.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.75 : 5,488.70 = 3,351.74 : x
  2. Step 2: Convert to fraction form
    3,979.75/5,488.70 = 3,351.74/x
  3. Step 3: Cross multiply
    3,979.75x = 5,488.70 × 3,351.74
  4. Step 4: Simplify right side
    3,979.75x = 18,396,695.34
  5. Step 5: Solve for x
    x = 18,396,695.34/3,979.75
  6. Step 6: Final answer
    x = 4,622.58

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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.