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Finding the Fourth Proportional to 2,523.20, 3,784.81 and 879.35

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Solution

The fourth proportional to 2,523.20, 3,784.81 and 879.35 is: 1,319.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,523.20 : 3,784.81 = 879.35 : x
  2. Step 2: Convert to fraction form
    2,523.20/3,784.81 = 879.35/x
  3. Step 3: Cross multiply
    2,523.20x = 3,784.81 × 879.35
  4. Step 4: Simplify right side
    2,523.20x = 3,328,179.94
  5. Step 5: Solve for x
    x = 3,328,179.94/2,523.20
  6. Step 6: Final answer
    x = 1,319.03

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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.