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Finding the Fourth Proportional to 8,108.71, 11,190.00 and 4,571.89

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Solution

The fourth proportional to 8,108.71, 11,190.00 and 4,571.89 is: 6,309.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,108.71 : 11,190.00 = 4,571.89 : x
  2. Step 2: Convert to fraction form
    8,108.71/11,190.00 = 4,571.89/x
  3. Step 3: Cross multiply
    8,108.71x = 11,190.00 × 4,571.89
  4. Step 4: Simplify right side
    8,108.71x = 51,159,475.50
  5. Step 5: Solve for x
    x = 51,159,475.50/8,108.71
  6. Step 6: Final answer
    x = 6,309.20

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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.