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Finding the Fourth Proportional to 8,571.54, 12,857.18 and 2,728.07

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Solution

The fourth proportional to 8,571.54, 12,857.18 and 2,728.07 is: 4,092.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,571.54 : 12,857.18 = 2,728.07 : x
  2. Step 2: Convert to fraction form
    8,571.54/12,857.18 = 2,728.07/x
  3. Step 3: Cross multiply
    8,571.54x = 12,857.18 × 2,728.07
  4. Step 4: Simplify right side
    8,571.54x = 35,075,209.12
  5. Step 5: Solve for x
    x = 35,075,209.12/8,571.54
  6. Step 6: Final answer
    x = 4,092.05

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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.