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Finding the Fourth Proportional to 6,391.48, 8,821.48 and 3,596.98

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Solution

The fourth proportional to 6,391.48, 8,821.48 and 3,596.98 is: 4,964.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,391.48 : 8,821.48 = 3,596.98 : x
  2. Step 2: Convert to fraction form
    6,391.48/8,821.48 = 3,596.98/x
  3. Step 3: Cross multiply
    6,391.48x = 8,821.48 × 3,596.98
  4. Step 4: Simplify right side
    6,391.48x = 31,730,687.13
  5. Step 5: Solve for x
    x = 31,730,687.13/6,391.48
  6. Step 6: Final answer
    x = 4,964.53

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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.