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Finding the Fourth Proportional to 3,994.40, 5,990.64 and 2,531.44

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Solution

The fourth proportional to 3,994.40, 5,990.64 and 2,531.44 is: 3,796.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,994.40 : 5,990.64 = 2,531.44 : x
  2. Step 2: Convert to fraction form
    3,994.40/5,990.64 = 2,531.44/x
  3. Step 3: Cross multiply
    3,994.40x = 5,990.64 × 2,531.44
  4. Step 4: Simplify right side
    3,994.40x = 15,164,945.72
  5. Step 5: Solve for x
    x = 15,164,945.72/3,994.40
  6. Step 6: Final answer
    x = 3,796.55

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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.