Home / 1,778.94-2,667.27-739.66

Finding the Fourth Proportional to 1,778.94, 2,667.27 and 739.66

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Solution

The fourth proportional to 1,778.94, 2,667.27 and 739.66 is: 1,109.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,778.94 : 2,667.27 = 739.66 : x
  2. Step 2: Convert to fraction form
    1,778.94/2,667.27 = 739.66/x
  3. Step 3: Cross multiply
    1,778.94x = 2,667.27 × 739.66
  4. Step 4: Simplify right side
    1,778.94x = 1,972,872.93
  5. Step 5: Solve for x
    x = 1,972,872.93/1,778.94
  6. Step 6: Final answer
    x = 1,109.02

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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.