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Finding the Fourth Proportional to 3,330.43, 4,991.28 and 2,865.01

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Solution

The fourth proportional to 3,330.43, 4,991.28 and 2,865.01 is: 4,293.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,330.43 : 4,991.28 = 2,865.01 : x
  2. Step 2: Convert to fraction form
    3,330.43/4,991.28 = 2,865.01/x
  3. Step 3: Cross multiply
    3,330.43x = 4,991.28 × 2,865.01
  4. Step 4: Simplify right side
    3,330.43x = 14,300,067.11
  5. Step 5: Solve for x
    x = 14,300,067.11/3,330.43
  6. Step 6: Final answer
    x = 4,293.76

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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.