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Finding the Fourth Proportional to 5,290.29, 7,939.41 and 3,620.41

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Solution

The fourth proportional to 5,290.29, 7,939.41 and 3,620.41 is: 5,433.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,290.29 : 7,939.41 = 3,620.41 : x
  2. Step 2: Convert to fraction form
    5,290.29/7,939.41 = 3,620.41/x
  3. Step 3: Cross multiply
    5,290.29x = 7,939.41 × 3,620.41
  4. Step 4: Simplify right side
    5,290.29x = 28,743,919.36
  5. Step 5: Solve for x
    x = 28,743,919.36/5,290.29
  6. Step 6: Final answer
    x = 5,433.34

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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.