Home / 2,912.80-4,017.30-1,791.73

Finding the Fourth Proportional to 2,912.80, 4,017.30 and 1,791.73

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Solution

The fourth proportional to 2,912.80, 4,017.30 and 1,791.73 is: 2,471.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,912.80 : 4,017.30 = 1,791.73 : x
  2. Step 2: Convert to fraction form
    2,912.80/4,017.30 = 1,791.73/x
  3. Step 3: Cross multiply
    2,912.80x = 4,017.30 × 1,791.73
  4. Step 4: Simplify right side
    2,912.80x = 7,197,916.93
  5. Step 5: Solve for x
    x = 7,197,916.93/2,912.80
  6. Step 6: Final answer
    x = 2,471.13

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Why These Related Problems?

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