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Finding the Fourth Proportional to 7,290.61, 10,932.13 and 2,608.81

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Solution

The fourth proportional to 7,290.61, 10,932.13 and 2,608.81 is: 3,911.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,290.61 : 10,932.13 = 2,608.81 : x
  2. Step 2: Convert to fraction form
    7,290.61/10,932.13 = 2,608.81/x
  3. Step 3: Cross multiply
    7,290.61x = 10,932.13 × 2,608.81
  4. Step 4: Simplify right side
    7,290.61x = 28,519,850.07
  5. Step 5: Solve for x
    x = 28,519,850.07/7,290.61
  6. Step 6: Final answer
    x = 3,911.86

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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.