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Finding the Fourth Proportional to 8,570.52, 12,857.40 and 2,728.80

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Solution

The fourth proportional to 8,570.52, 12,857.40 and 2,728.80 is: 4,093.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,570.52 : 12,857.40 = 2,728.80 : x
  2. Step 2: Convert to fraction form
    8,570.52/12,857.40 = 2,728.80/x
  3. Step 3: Cross multiply
    8,570.52x = 12,857.40 × 2,728.80
  4. Step 4: Simplify right side
    8,570.52x = 35,085,273.12
  5. Step 5: Solve for x
    x = 35,085,273.12/8,570.52
  6. Step 6: Final answer
    x = 4,093.72

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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.