Home / 2,791.45-4,187.81-1,231.89

Finding the Fourth Proportional to 2,791.45, 4,187.81 and 1,231.89

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Solution

The fourth proportional to 2,791.45, 4,187.81 and 1,231.89 is: 1,848.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,791.45 : 4,187.81 = 1,231.89 : x
  2. Step 2: Convert to fraction form
    2,791.45/4,187.81 = 1,231.89/x
  3. Step 3: Cross multiply
    2,791.45x = 4,187.81 × 1,231.89
  4. Step 4: Simplify right side
    2,791.45x = 5,158,921.26
  5. Step 5: Solve for x
    x = 5,158,921.26/2,791.45
  6. Step 6: Final answer
    x = 1,848.12

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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.