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Finding the Fourth Proportional to 2,857.97, 4,287.12 and 1,102.98

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Solution

The fourth proportional to 2,857.97, 4,287.12 and 1,102.98 is: 1,654.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,857.97 : 4,287.12 = 1,102.98 : x
  2. Step 2: Convert to fraction form
    2,857.97/4,287.12 = 1,102.98/x
  3. Step 3: Cross multiply
    2,857.97x = 4,287.12 × 1,102.98
  4. Step 4: Simplify right side
    2,857.97x = 4,728,603.48
  5. Step 5: Solve for x
    x = 4,728,603.48/2,857.97
  6. Step 6: Final answer
    x = 1,654.54

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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.