Home / 1,091.20-1,629.52-1,079.86

Finding the Fourth Proportional to 1,091.20, 1,629.52 and 1,079.86

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Solution

The fourth proportional to 1,091.20, 1,629.52 and 1,079.86 is: 1,612.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,091.20 : 1,629.52 = 1,079.86 : x
  2. Step 2: Convert to fraction form
    1,091.20/1,629.52 = 1,079.86/x
  3. Step 3: Cross multiply
    1,091.20x = 1,629.52 × 1,079.86
  4. Step 4: Simplify right side
    1,091.20x = 1,759,653.47
  5. Step 5: Solve for x
    x = 1,759,653.47/1,091.20
  6. Step 6: Final answer
    x = 1,612.59

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.