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Finding the Fourth Proportional to 3,367.79, 5,042.37 and 1,720.79

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Solution

The fourth proportional to 3,367.79, 5,042.37 and 1,720.79 is: 2,576.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,367.79 : 5,042.37 = 1,720.79 : x
  2. Step 2: Convert to fraction form
    3,367.79/5,042.37 = 1,720.79/x
  3. Step 3: Cross multiply
    3,367.79x = 5,042.37 × 1,720.79
  4. Step 4: Simplify right side
    3,367.79x = 8,676,859.87
  5. Step 5: Solve for x
    x = 8,676,859.87/3,367.79
  6. Step 6: Final answer
    x = 2,576.43

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1.5x scale

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.