Home / 2,199.66-3,299.78-739.23

Finding the Fourth Proportional to 2,199.66, 3,299.78 and 739.23

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Solution

The fourth proportional to 2,199.66, 3,299.78 and 739.23 is: 1,108.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,199.66 : 3,299.78 = 739.23 : x
  2. Step 2: Convert to fraction form
    2,199.66/3,299.78 = 739.23/x
  3. Step 3: Cross multiply
    2,199.66x = 3,299.78 × 739.23
  4. Step 4: Simplify right side
    2,199.66x = 2,439,285.84
  5. Step 5: Solve for x
    x = 2,439,285.84/2,199.66
  6. Step 6: Final answer
    x = 1,108.94

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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.