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Finding the Fourth Proportional to 3,893.58, 5,359.95 and 3,519.36

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Solution

The fourth proportional to 3,893.58, 5,359.95 and 3,519.36 is: 4,844.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,893.58 : 5,359.95 = 3,519.36 : x
  2. Step 2: Convert to fraction form
    3,893.58/5,359.95 = 3,519.36/x
  3. Step 3: Cross multiply
    3,893.58x = 5,359.95 × 3,519.36
  4. Step 4: Simplify right side
    3,893.58x = 18,863,593.63
  5. Step 5: Solve for x
    x = 18,863,593.63/3,893.58
  6. Step 6: Final answer
    x = 4,844.79

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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.