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Finding the Fourth Proportional to 2,651.71, 3,974.64 and 1,333.35

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Solution

The fourth proportional to 2,651.71, 3,974.64 and 1,333.35 is: 1,998.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,651.71 : 3,974.64 = 1,333.35 : x
  2. Step 2: Convert to fraction form
    2,651.71/3,974.64 = 1,333.35/x
  3. Step 3: Cross multiply
    2,651.71x = 3,974.64 × 1,333.35
  4. Step 4: Simplify right side
    2,651.71x = 5,299,586.24
  5. Step 5: Solve for x
    x = 5,299,586.24/2,651.71
  6. Step 6: Final answer
    x = 1,998.55

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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.