Home / 2,179.18-3,270.36-792.64

Finding the Fourth Proportional to 2,179.18, 3,270.36 and 792.64

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Solution

The fourth proportional to 2,179.18, 3,270.36 and 792.64 is: 1,189.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.18 : 3,270.36 = 792.64 : x
  2. Step 2: Convert to fraction form
    2,179.18/3,270.36 = 792.64/x
  3. Step 3: Cross multiply
    2,179.18x = 3,270.36 × 792.64
  4. Step 4: Simplify right side
    2,179.18x = 2,592,205.70
  5. Step 5: Solve for x
    x = 2,592,205.70/2,179.18
  6. Step 6: Final answer
    x = 1,189.53

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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.