Home / 1,491.38-2,237.10-711.47

Finding the Fourth Proportional to 1,491.38, 2,237.10 and 711.47

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Solution

The fourth proportional to 1,491.38, 2,237.10 and 711.47 is: 1,067.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,491.38 : 2,237.10 = 711.47 : x
  2. Step 2: Convert to fraction form
    1,491.38/2,237.10 = 711.47/x
  3. Step 3: Cross multiply
    1,491.38x = 2,237.10 × 711.47
  4. Step 4: Simplify right side
    1,491.38x = 1,591,629.54
  5. Step 5: Solve for x
    x = 1,591,629.54/1,491.38
  6. Step 6: Final answer
    x = 1,067.22

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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.