Home / 1,181.36-1,636.82-1,155.44

Finding the Fourth Proportional to 1,181.36, 1,636.82 and 1,155.44

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Solution

The fourth proportional to 1,181.36, 1,636.82 and 1,155.44 is: 1,600.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,181.36 : 1,636.82 = 1,155.44 : x
  2. Step 2: Convert to fraction form
    1,181.36/1,636.82 = 1,155.44/x
  3. Step 3: Cross multiply
    1,181.36x = 1,636.82 × 1,155.44
  4. Step 4: Simplify right side
    1,181.36x = 1,891,247.30
  5. Step 5: Solve for x
    x = 1,891,247.30/1,181.36
  6. Step 6: Final answer
    x = 1,600.91

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.