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Finding the Fourth Proportional to 3,369.79, 5,045.37 and 1,722.79

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Solution

The fourth proportional to 3,369.79, 5,045.37 and 1,722.79 is: 2,579.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,369.79 : 5,045.37 = 1,722.79 : x
  2. Step 2: Convert to fraction form
    3,369.79/5,045.37 = 1,722.79/x
  3. Step 3: Cross multiply
    3,369.79x = 5,045.37 × 1,722.79
  4. Step 4: Simplify right side
    3,369.79x = 8,692,112.98
  5. Step 5: Solve for x
    x = 8,692,112.98/3,369.79
  6. Step 6: Final answer
    x = 2,579.42

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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.