Home / 2,253.21-3,378.90-792.02

Finding the Fourth Proportional to 2,253.21, 3,378.90 and 792.02

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Solution

The fourth proportional to 2,253.21, 3,378.90 and 792.02 is: 1,187.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,253.21 : 3,378.90 = 792.02 : x
  2. Step 2: Convert to fraction form
    2,253.21/3,378.90 = 792.02/x
  3. Step 3: Cross multiply
    2,253.21x = 3,378.90 × 792.02
  4. Step 4: Simplify right side
    2,253.21x = 2,676,156.38
  5. Step 5: Solve for x
    x = 2,676,156.38/2,253.21
  6. Step 6: Final answer
    x = 1,187.71

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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.