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Finding the Fourth Proportional to 6,391.24, 8,819.78 and 3,558.52

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Solution

The fourth proportional to 6,391.24, 8,819.78 and 3,558.52 is: 4,910.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,391.24 : 8,819.78 = 3,558.52 : x
  2. Step 2: Convert to fraction form
    6,391.24/8,819.78 = 3,558.52/x
  3. Step 3: Cross multiply
    6,391.24x = 8,819.78 × 3,558.52
  4. Step 4: Simplify right side
    6,391.24x = 31,385,363.53
  5. Step 5: Solve for x
    x = 31,385,363.53/6,391.24
  6. Step 6: Final answer
    x = 4,910.68

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