Home / 1,999.44-2,759.14-1,115.28

Finding the Fourth Proportional to 1,999.44, 2,759.14 and 1,115.28

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Solution

The fourth proportional to 1,999.44, 2,759.14 and 1,115.28 is: 1,539.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,999.44 : 2,759.14 = 1,115.28 : x
  2. Step 2: Convert to fraction form
    1,999.44/2,759.14 = 1,115.28/x
  3. Step 3: Cross multiply
    1,999.44x = 2,759.14 × 1,115.28
  4. Step 4: Simplify right side
    1,999.44x = 3,077,213.66
  5. Step 5: Solve for x
    x = 3,077,213.66/1,999.44
  6. Step 6: Final answer
    x = 1,539.04

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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.