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Finding the Fourth Proportional to 8,699.36, 12,003.24 and 5,163.74

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Solution

The fourth proportional to 8,699.36, 12,003.24 and 5,163.74 is: 7,124.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,699.36 : 12,003.24 = 5,163.74 : x
  2. Step 2: Convert to fraction form
    8,699.36/12,003.24 = 5,163.74/x
  3. Step 3: Cross multiply
    8,699.36x = 12,003.24 × 5,163.74
  4. Step 4: Simplify right side
    8,699.36x = 61,981,610.52
  5. Step 5: Solve for x
    x = 61,981,610.52/8,699.36
  6. Step 6: Final answer
    x = 7,124.85

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1.5x scale

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.