Home / 1,999.36-2,759.16-1,115.25

Finding the Fourth Proportional to 1,999.36, 2,759.16 and 1,115.25

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Solution

The fourth proportional to 1,999.36, 2,759.16 and 1,115.25 is: 1,539.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,999.36 : 2,759.16 = 1,115.25 : x
  2. Step 2: Convert to fraction form
    1,999.36/2,759.16 = 1,115.25/x
  3. Step 3: Cross multiply
    1,999.36x = 2,759.16 × 1,115.25
  4. Step 4: Simplify right side
    1,999.36x = 3,077,153.19
  5. Step 5: Solve for x
    x = 3,077,153.19/1,999.36
  6. Step 6: Final answer
    x = 1,539.07

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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.