Home / 1,132.27-1,698.41-747.43

Finding the Fourth Proportional to 1,132.27, 1,698.41 and 747.43

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Solution

The fourth proportional to 1,132.27, 1,698.41 and 747.43 is: 1,121.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,132.27 : 1,698.41 = 747.43 : x
  2. Step 2: Convert to fraction form
    1,132.27/1,698.41 = 747.43/x
  3. Step 3: Cross multiply
    1,132.27x = 1,698.41 × 747.43
  4. Step 4: Simplify right side
    1,132.27x = 1,269,442.59
  5. Step 5: Solve for x
    x = 1,269,442.59/1,132.27
  6. Step 6: Final answer
    x = 1,121.15

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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.