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Finding the Fourth Proportional to 3,994.87, 5,993.21 and 1,221.93

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Solution

The fourth proportional to 3,994.87, 5,993.21 and 1,221.93 is: 1,833.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,994.87 : 5,993.21 = 1,221.93 : x
  2. Step 2: Convert to fraction form
    3,994.87/5,993.21 = 1,221.93/x
  3. Step 3: Cross multiply
    3,994.87x = 5,993.21 × 1,221.93
  4. Step 4: Simplify right side
    3,994.87x = 7,323,283.10
  5. Step 5: Solve for x
    x = 7,323,283.10/3,994.87
  6. Step 6: Final answer
    x = 1,833.17

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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.