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Finding the Fourth Proportional to 3,518.88, 4,857.04 and 2,102.88

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Solution

The fourth proportional to 3,518.88, 4,857.04 and 2,102.88 is: 2,902.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,518.88 : 4,857.04 = 2,102.88 : x
  2. Step 2: Convert to fraction form
    3,518.88/4,857.04 = 2,102.88/x
  3. Step 3: Cross multiply
    3,518.88x = 4,857.04 × 2,102.88
  4. Step 4: Simplify right side
    3,518.88x = 10,213,772.28
  5. Step 5: Solve for x
    x = 10,213,772.28/3,518.88
  6. Step 6: Final answer
    x = 2,902.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.