Home / 1,191.45-1,793.63-1,072.38

Finding the Fourth Proportional to 1,191.45, 1,793.63 and 1,072.38

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Solution

The fourth proportional to 1,191.45, 1,793.63 and 1,072.38 is: 1,614.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191.45 : 1,793.63 = 1,072.38 : x
  2. Step 2: Convert to fraction form
    1,191.45/1,793.63 = 1,072.38/x
  3. Step 3: Cross multiply
    1,191.45x = 1,793.63 × 1,072.38
  4. Step 4: Simplify right side
    1,191.45x = 1,923,452.94
  5. Step 5: Solve for x
    x = 1,923,452.94/1,191.45
  6. Step 6: Final answer
    x = 1,614.38

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.