Home / 1,961.30-2,706.81-1,175.54

Finding the Fourth Proportional to 1,961.30, 2,706.81 and 1,175.54

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Solution

The fourth proportional to 1,961.30, 2,706.81 and 1,175.54 is: 1,622.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,961.30 : 2,706.81 = 1,175.54 : x
  2. Step 2: Convert to fraction form
    1,961.30/2,706.81 = 1,175.54/x
  3. Step 3: Cross multiply
    1,961.30x = 2,706.81 × 1,175.54
  4. Step 4: Simplify right side
    1,961.30x = 3,181,963.43
  5. Step 5: Solve for x
    x = 3,181,963.43/1,961.30
  6. Step 6: Final answer
    x = 1,622.37

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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.