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Finding the Fourth Proportional to 2,253.87, 3,380.80 and 792.68

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Solution

The fourth proportional to 2,253.87, 3,380.80 and 792.68 is: 1,189.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,253.87 : 3,380.80 = 792.68 : x
  2. Step 2: Convert to fraction form
    2,253.87/3,380.80 = 792.68/x
  3. Step 3: Cross multiply
    2,253.87x = 3,380.80 × 792.68
  4. Step 4: Simplify right side
    2,253.87x = 2,679,899.01
  5. Step 5: Solve for x
    x = 2,679,899.01/2,253.87
  6. Step 6: Final answer
    x = 1,189.02

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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.