Home / 1,961.22-2,706.40-1,122.06

Finding the Fourth Proportional to 1,961.22, 2,706.40 and 1,122.06

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Solution

The fourth proportional to 1,961.22, 2,706.40 and 1,122.06 is: 1,548.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,961.22 : 2,706.40 = 1,122.06 : x
  2. Step 2: Convert to fraction form
    1,961.22/2,706.40 = 1,122.06/x
  3. Step 3: Cross multiply
    1,961.22x = 2,706.40 × 1,122.06
  4. Step 4: Simplify right side
    1,961.22x = 3,036,743.18
  5. Step 5: Solve for x
    x = 3,036,743.18/1,961.22
  6. Step 6: Final answer
    x = 1,548.39

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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.