Home / 1,961.12-2,706.12-1,175.36

Finding the Fourth Proportional to 1,961.12, 2,706.12 and 1,175.36

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Solution

The fourth proportional to 1,961.12, 2,706.12 and 1,175.36 is: 1,621.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,961.12 : 2,706.12 = 1,175.36 : x
  2. Step 2: Convert to fraction form
    1,961.12/2,706.12 = 1,175.36/x
  3. Step 3: Cross multiply
    1,961.12x = 2,706.12 × 1,175.36
  4. Step 4: Simplify right side
    1,961.12x = 3,180,665.20
  5. Step 5: Solve for x
    x = 3,180,665.20/1,961.12
  6. Step 6: Final answer
    x = 1,621.86

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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.