Home / 1,189.18-1,632.17-1,078.48

Finding the Fourth Proportional to 1,189.18, 1,632.17 and 1,078.48

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Solution

The fourth proportional to 1,189.18, 1,632.17 and 1,078.48 is: 1,480.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189.18 : 1,632.17 = 1,078.48 : x
  2. Step 2: Convert to fraction form
    1,189.18/1,632.17 = 1,078.48/x
  3. Step 3: Cross multiply
    1,189.18x = 1,632.17 × 1,078.48
  4. Step 4: Simplify right side
    1,189.18x = 1,760,262.70
  5. Step 5: Solve for x
    x = 1,760,262.70/1,189.18
  6. Step 6: Final answer
    x = 1,480.23

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.