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Finding the Fourth Proportional to 2,660.22, 3,989.00 and 1,550.00

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Solution

The fourth proportional to 2,660.22, 3,989.00 and 1,550.00 is: 2,324.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,660.22 : 3,989.00 = 1,550.00 : x
  2. Step 2: Convert to fraction form
    2,660.22/3,989.00 = 1,550.00/x
  3. Step 3: Cross multiply
    2,660.22x = 3,989.00 × 1,550.00
  4. Step 4: Simplify right side
    2,660.22x = 6,182,952.22
  5. Step 5: Solve for x
    x = 6,182,952.22/2,660.22
  6. Step 6: Final answer
    x = 2,324.23

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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.