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Finding the Fourth Proportional to 3,993.36, 5,994.90 and 3,721.20

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Solution

The fourth proportional to 3,993.36, 5,994.90 and 3,721.20 is: 5,586.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,993.36 : 5,994.90 = 3,721.20 : x
  2. Step 2: Convert to fraction form
    3,993.36/5,994.90 = 3,721.20/x
  3. Step 3: Cross multiply
    3,993.36x = 5,994.90 × 3,721.20
  4. Step 4: Simplify right side
    3,993.36x = 22,308,221.88
  5. Step 5: Solve for x
    x = 22,308,221.88/3,993.36
  6. Step 6: Final answer
    x = 5,586.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.