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Finding the Fourth Proportional to 8,108, 11,190.64 and 4,571.28

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Solution

The fourth proportional to 8,108, 11,190.64 and 4,571.28 is: 6,309.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,108 : 11,190.64 = 4,571.28 : x
  2. Step 2: Convert to fraction form
    8,108/11,190.64 = 4,571.28/x
  3. Step 3: Cross multiply
    8,108x = 11,190.64 × 4,571.28
  4. Step 4: Simplify right side
    8,108x = 51,155,548.82
  5. Step 5: Solve for x
    x = 51,155,548.82/8,108
  6. Step 6: Final answer
    x = 6,309.27

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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.