Home / 3,991.26-5,987.16-3,124.02

Finding the Fourth Proportional to 3,991.26, 5,987.16 and 3,124.02

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Solution

The fourth proportional to 3,991.26, 5,987.16 and 3,124.02 is: 4,686.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.26 : 5,987.16 = 3,124.02 : x
  2. Step 2: Convert to fraction form
    3,991.26/5,987.16 = 3,124.02/x
  3. Step 3: Cross multiply
    3,991.26x = 5,987.16 × 3,124.02
  4. Step 4: Simplify right side
    3,991.26x = 18,704,007.58
  5. Step 5: Solve for x
    x = 18,704,007.58/3,991.26
  6. Step 6: Final answer
    x = 4,686.24

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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.