Home / 2,289.72-3,159.82-1,241.78

Finding the Fourth Proportional to 2,289.72, 3,159.82 and 1,241.78

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Solution

The fourth proportional to 2,289.72, 3,159.82 and 1,241.78 is: 1,713.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,289.72 : 3,159.82 = 1,241.78 : x
  2. Step 2: Convert to fraction form
    2,289.72/3,159.82 = 1,241.78/x
  3. Step 3: Cross multiply
    2,289.72x = 3,159.82 × 1,241.78
  4. Step 4: Simplify right side
    2,289.72x = 3,923,801.28
  5. Step 5: Solve for x
    x = 3,923,801.28/2,289.72
  6. Step 6: Final answer
    x = 1,713.66

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.