Home / 8,108.50-11,191.36-4,571.78

Finding the Fourth Proportional to 8,108.50, 11,191.36 and 4,571.78

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Solution

The fourth proportional to 8,108.50, 11,191.36 and 4,571.78 is: 6,309.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,108.50 : 11,191.36 = 4,571.78 : x
  2. Step 2: Convert to fraction form
    8,108.50/11,191.36 = 4,571.78/x
  3. Step 3: Cross multiply
    8,108.50x = 11,191.36 × 4,571.78
  4. Step 4: Simplify right side
    8,108.50x = 51,164,435.82
  5. Step 5: Solve for x
    x = 51,164,435.82/8,108.50
  6. Step 6: Final answer
    x = 6,309.98

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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.