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Finding the Fourth Proportional to 8,472.49, 12,707.93 and 5,183.89

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Solution

The fourth proportional to 8,472.49, 12,707.93 and 5,183.89 is: 7,775.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,472.49 : 12,707.93 = 5,183.89 : x
  2. Step 2: Convert to fraction form
    8,472.49/12,707.93 = 5,183.89/x
  3. Step 3: Cross multiply
    8,472.49x = 12,707.93 × 5,183.89
  4. Step 4: Simplify right side
    8,472.49x = 65,876,485.33
  5. Step 5: Solve for x
    x = 65,876,485.33/8,472.49
  6. Step 6: Final answer
    x = 7,775.34

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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.