Home / 1,961.10-2,706.36-1,205.10

Finding the Fourth Proportional to 1,961.10, 2,706.36 and 1,205.10

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Solution

The fourth proportional to 1,961.10, 2,706.36 and 1,205.10 is: 1,663.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,961.10 : 2,706.36 = 1,205.10 : x
  2. Step 2: Convert to fraction form
    1,961.10/2,706.36 = 1,205.10/x
  3. Step 3: Cross multiply
    1,961.10x = 2,706.36 × 1,205.10
  4. Step 4: Simplify right side
    1,961.10x = 3,261,434.44
  5. Step 5: Solve for x
    x = 3,261,434.44/1,961.10
  6. Step 6: Final answer
    x = 1,663.06

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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.