Home / 7,327.12-10,991.20-2,649.90

Finding the Fourth Proportional to 7,327.12, 10,991.20 and 2,649.90

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Solution

The fourth proportional to 7,327.12, 10,991.20 and 2,649.90 is: 3,975.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,327.12 : 10,991.20 = 2,649.90 : x
  2. Step 2: Convert to fraction form
    7,327.12/10,991.20 = 2,649.90/x
  3. Step 3: Cross multiply
    7,327.12x = 10,991.20 × 2,649.90
  4. Step 4: Simplify right side
    7,327.12x = 29,125,580.88
  5. Step 5: Solve for x
    x = 29,125,580.88/7,327.12
  6. Step 6: Final answer
    x = 3,975.04

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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.