Home / 7,321.28-10,982.40-2,702.72

Finding the Fourth Proportional to 7,321.28, 10,982.40 and 2,702.72

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Solution

The fourth proportional to 7,321.28, 10,982.40 and 2,702.72 is: 4,054.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,321.28 : 10,982.40 = 2,702.72 : x
  2. Step 2: Convert to fraction form
    7,321.28/10,982.40 = 2,702.72/x
  3. Step 3: Cross multiply
    7,321.28x = 10,982.40 × 2,702.72
  4. Step 4: Simplify right side
    7,321.28x = 29,682,352.13
  5. Step 5: Solve for x
    x = 29,682,352.13/7,321.28
  6. Step 6: Final answer
    x = 4,054.26

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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.