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Finding the Fourth Proportional to 7,317.09, 10,978.44 and 2,935.80

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Solution

The fourth proportional to 7,317.09, 10,978.44 and 2,935.80 is: 4,404.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,317.09 : 10,978.44 = 2,935.80 : x
  2. Step 2: Convert to fraction form
    7,317.09/10,978.44 = 2,935.80/x
  3. Step 3: Cross multiply
    7,317.09x = 10,978.44 × 2,935.80
  4. Step 4: Simplify right side
    7,317.09x = 32,230,504.15
  5. Step 5: Solve for x
    x = 32,230,504.15/7,317.09
  6. Step 6: Final answer
    x = 4,404.83

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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.