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Finding the Fourth Proportional to 3,979.76, 5,934.90 and 3,488.44

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Solution

The fourth proportional to 3,979.76, 5,934.90 and 3,488.44 is: 5,202.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.76 : 5,934.90 = 3,488.44 : x
  2. Step 2: Convert to fraction form
    3,979.76/5,934.90 = 3,488.44/x
  3. Step 3: Cross multiply
    3,979.76x = 5,934.90 × 3,488.44
  4. Step 4: Simplify right side
    3,979.76x = 20,703,539.19
  5. Step 5: Solve for x
    x = 20,703,539.19/3,979.76
  6. Step 6: Final answer
    x = 5,202.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.