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Finding the Fourth Proportional to 5,669.86, 7,824.24 and 3,151.82

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Solution

The fourth proportional to 5,669.86, 7,824.24 and 3,151.82 is: 4,349.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,669.86 : 7,824.24 = 3,151.82 : x
  2. Step 2: Convert to fraction form
    5,669.86/7,824.24 = 3,151.82/x
  3. Step 3: Cross multiply
    5,669.86x = 7,824.24 × 3,151.82
  4. Step 4: Simplify right side
    5,669.86x = 24,660,596.12
  5. Step 5: Solve for x
    x = 24,660,596.12/5,669.86
  6. Step 6: Final answer
    x = 4,349.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.