Home / 1,179.90-1,778.68-1,100.61

Finding the Fourth Proportional to 1,179.90, 1,778.68 and 1,100.61

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Solution

The fourth proportional to 1,179.90, 1,778.68 and 1,100.61 is: 1,659.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179.90 : 1,778.68 = 1,100.61 : x
  2. Step 2: Convert to fraction form
    1,179.90/1,778.68 = 1,100.61/x
  3. Step 3: Cross multiply
    1,179.90x = 1,778.68 × 1,100.61
  4. Step 4: Simplify right side
    1,179.90x = 1,957,632.99
  5. Step 5: Solve for x
    x = 1,957,632.99/1,179.90
  6. Step 6: Final answer
    x = 1,659.15

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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.