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Finding the Fourth Proportional to 5,381.76, 8,074.80 and 2,095.86

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Solution

The fourth proportional to 5,381.76, 8,074.80 and 2,095.86 is: 3,144.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,381.76 : 8,074.80 = 2,095.86 : x
  2. Step 2: Convert to fraction form
    5,381.76/8,074.80 = 2,095.86/x
  3. Step 3: Cross multiply
    5,381.76x = 8,074.80 × 2,095.86
  4. Step 4: Simplify right side
    5,381.76x = 16,923,650.33
  5. Step 5: Solve for x
    x = 16,923,650.33/5,381.76
  6. Step 6: Final answer
    x = 3,144.63

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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.