Home / 8,132.80-12,200.96-2,938.64

Finding the Fourth Proportional to 8,132.80, 12,200.96 and 2,938.64

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Solution

The fourth proportional to 8,132.80, 12,200.96 and 2,938.64 is: 4,408.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,132.80 : 12,200.96 = 2,938.64 : x
  2. Step 2: Convert to fraction form
    8,132.80/12,200.96 = 2,938.64/x
  3. Step 3: Cross multiply
    8,132.80x = 12,200.96 × 2,938.64
  4. Step 4: Simplify right side
    8,132.80x = 35,854,229.09
  5. Step 5: Solve for x
    x = 35,854,229.09/8,132.80
  6. Step 6: Final answer
    x = 4,408.60

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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.