Home / 8,571.20-12,857.70-2,331.31

Finding the Fourth Proportional to 8,571.20, 12,857.70 and 2,331.31

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Solution

The fourth proportional to 8,571.20, 12,857.70 and 2,331.31 is: 3,497.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,571.20 : 12,857.70 = 2,331.31 : x
  2. Step 2: Convert to fraction form
    8,571.20/12,857.70 = 2,331.31/x
  3. Step 3: Cross multiply
    8,571.20x = 12,857.70 × 2,331.31
  4. Step 4: Simplify right side
    8,571.20x = 29,975,220.30
  5. Step 5: Solve for x
    x = 29,975,220.30/8,571.20
  6. Step 6: Final answer
    x = 3,497.20

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1.5x scale

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.