Home / 3,991.12-5,987.16-1,069.52

Finding the Fourth Proportional to 3,991.12, 5,987.16 and 1,069.52

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Solution

The fourth proportional to 3,991.12, 5,987.16 and 1,069.52 is: 1,604.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.12 : 5,987.16 = 1,069.52 : x
  2. Step 2: Convert to fraction form
    3,991.12/5,987.16 = 1,069.52/x
  3. Step 3: Cross multiply
    3,991.12x = 5,987.16 × 1,069.52
  4. Step 4: Simplify right side
    3,991.12x = 6,403,387.36
  5. Step 5: Solve for x
    x = 6,403,387.36/3,991.12
  6. Step 6: Final answer
    x = 1,604.41

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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.