Home / 8,572.20-12,857.73-2,728.02

Finding the Fourth Proportional to 8,572.20, 12,857.73 and 2,728.02

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Solution

The fourth proportional to 8,572.20, 12,857.73 and 2,728.02 is: 4,091.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,572.20 : 12,857.73 = 2,728.02 : x
  2. Step 2: Convert to fraction form
    8,572.20/12,857.73 = 2,728.02/x
  3. Step 3: Cross multiply
    8,572.20x = 12,857.73 × 2,728.02
  4. Step 4: Simplify right side
    8,572.20x = 35,076,144.59
  5. Step 5: Solve for x
    x = 35,076,144.59/8,572.20
  6. Step 6: Final answer
    x = 4,091.85

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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.