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Finding the Fourth Proportional to 5,679.86, 8,519.85 and 3,731.54

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Solution

The fourth proportional to 5,679.86, 8,519.85 and 3,731.54 is: 5,597.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,679.86 : 8,519.85 = 3,731.54 : x
  2. Step 2: Convert to fraction form
    5,679.86/8,519.85 = 3,731.54/x
  3. Step 3: Cross multiply
    5,679.86x = 8,519.85 × 3,731.54
  4. Step 4: Simplify right side
    5,679.86x = 31,792,118.47
  5. Step 5: Solve for x
    x = 31,792,118.47/5,679.86
  6. Step 6: Final answer
    x = 5,597.35

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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.