Home / 2,125.20-3,188.58-827.56

Finding the Fourth Proportional to 2,125.20, 3,188.58 and 827.56

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Solution

The fourth proportional to 2,125.20, 3,188.58 and 827.56 is: 1,241.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.20 : 3,188.58 = 827.56 : x
  2. Step 2: Convert to fraction form
    2,125.20/3,188.58 = 827.56/x
  3. Step 3: Cross multiply
    2,125.20x = 3,188.58 × 827.56
  4. Step 4: Simplify right side
    2,125.20x = 2,638,741.26
  5. Step 5: Solve for x
    x = 2,638,741.26/2,125.20
  6. Step 6: Final answer
    x = 1,241.64

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.