Home / 9,321.72-13,979.60-3,080.57

Finding the Fourth Proportional to 9,321.72, 13,979.60 and 3,080.57

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Solution

The fourth proportional to 9,321.72, 13,979.60 and 3,080.57 is: 4,619.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,321.72 : 13,979.60 = 3,080.57 : x
  2. Step 2: Convert to fraction form
    9,321.72/13,979.60 = 3,080.57/x
  3. Step 3: Cross multiply
    9,321.72x = 13,979.60 × 3,080.57
  4. Step 4: Simplify right side
    9,321.72x = 43,065,062.62
  5. Step 5: Solve for x
    x = 43,065,062.62/9,321.72
  6. Step 6: Final answer
    x = 4,619.86

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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.