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Finding the Fourth Proportional to 3,991.24, 5,983.62 and 1,393.84

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Solution

The fourth proportional to 3,991.24, 5,983.62 and 1,393.84 is: 2,089.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.24 : 5,983.62 = 1,393.84 : x
  2. Step 2: Convert to fraction form
    3,991.24/5,983.62 = 1,393.84/x
  3. Step 3: Cross multiply
    3,991.24x = 5,983.62 × 1,393.84
  4. Step 4: Simplify right side
    3,991.24x = 8,340,208.90
  5. Step 5: Solve for x
    x = 8,340,208.90/3,991.24
  6. Step 6: Final answer
    x = 2,089.63

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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.