Home / 1,091.20-1,633.92-927.04

Finding the Fourth Proportional to 1,091.20, 1,633.92 and 927.04

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Solution

The fourth proportional to 1,091.20, 1,633.92 and 927.04 is: 1,388.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,091.20 : 1,633.92 = 927.04 : x
  2. Step 2: Convert to fraction form
    1,091.20/1,633.92 = 927.04/x
  3. Step 3: Cross multiply
    1,091.20x = 1,633.92 × 927.04
  4. Step 4: Simplify right side
    1,091.20x = 1,514,709.20
  5. Step 5: Solve for x
    x = 1,514,709.20/1,091.20
  6. Step 6: Final answer
    x = 1,388.11

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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.