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Finding the Fourth Proportional to 2,799.81, 4,193.32 and 1,339.99

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Solution

The fourth proportional to 2,799.81, 4,193.32 and 1,339.99 is: 2,006.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,799.81 : 4,193.32 = 1,339.99 : x
  2. Step 2: Convert to fraction form
    2,799.81/4,193.32 = 1,339.99/x
  3. Step 3: Cross multiply
    2,799.81x = 4,193.32 × 1,339.99
  4. Step 4: Simplify right side
    2,799.81x = 5,619,006.87
  5. Step 5: Solve for x
    x = 5,619,006.87/2,799.81
  6. Step 6: Final answer
    x = 2,006.92

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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.