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Finding the Fourth Proportional to 2,523.22, 3,785.37 and 879.64

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Solution

The fourth proportional to 2,523.22, 3,785.37 and 879.64 is: 1,319.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,523.22 : 3,785.37 = 879.64 : x
  2. Step 2: Convert to fraction form
    2,523.22/3,785.37 = 879.64/x
  3. Step 3: Cross multiply
    2,523.22x = 3,785.37 × 879.64
  4. Step 4: Simplify right side
    2,523.22x = 3,329,762.87
  5. Step 5: Solve for x
    x = 3,329,762.87/2,523.22
  6. Step 6: Final answer
    x = 1,319.65

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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.