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Finding the Fourth Proportional to 3,999.48, 5,999.21 and 3,786.24

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Solution

The fourth proportional to 3,999.48, 5,999.21 and 3,786.24 is: 5,679.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.48 : 5,999.21 = 3,786.24 : x
  2. Step 2: Convert to fraction form
    3,999.48/5,999.21 = 3,786.24/x
  3. Step 3: Cross multiply
    3,999.48x = 5,999.21 × 3,786.24
  4. Step 4: Simplify right side
    3,999.48x = 22,714,487.93
  5. Step 5: Solve for x
    x = 22,714,487.93/3,999.48
  6. Step 6: Final answer
    x = 5,679.37

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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.