Home / 1,691.24-2,336.15-1,360.91

Finding the Fourth Proportional to 1,691.24, 2,336.15 and 1,360.91

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Solution

The fourth proportional to 1,691.24, 2,336.15 and 1,360.91 is: 1,879.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,691.24 : 2,336.15 = 1,360.91 : x
  2. Step 2: Convert to fraction form
    1,691.24/2,336.15 = 1,360.91/x
  3. Step 3: Cross multiply
    1,691.24x = 2,336.15 × 1,360.91
  4. Step 4: Simplify right side
    1,691.24x = 3,179,289.90
  5. Step 5: Solve for x
    x = 3,179,289.90/1,691.24
  6. Step 6: Final answer
    x = 1,879.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.