Home / 1,991.44-2,985.96-1,169.32

Finding the Fourth Proportional to 1,991.44, 2,985.96 and 1,169.32

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Solution

The fourth proportional to 1,991.44, 2,985.96 and 1,169.32 is: 1,753.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991.44 : 2,985.96 = 1,169.32 : x
  2. Step 2: Convert to fraction form
    1,991.44/2,985.96 = 1,169.32/x
  3. Step 3: Cross multiply
    1,991.44x = 2,985.96 × 1,169.32
  4. Step 4: Simplify right side
    1,991.44x = 3,491,542.75
  5. Step 5: Solve for x
    x = 3,491,542.75/1,991.44
  6. Step 6: Final answer
    x = 1,753.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.