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Finding the Fourth Proportional to 7,887.93, 11,827.46 and 2,620.12

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Solution

The fourth proportional to 7,887.93, 11,827.46 and 2,620.12 is: 3,928.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,887.93 : 11,827.46 = 2,620.12 : x
  2. Step 2: Convert to fraction form
    7,887.93/11,827.46 = 2,620.12/x
  3. Step 3: Cross multiply
    7,887.93x = 11,827.46 × 2,620.12
  4. Step 4: Simplify right side
    7,887.93x = 30,989,351.39
  5. Step 5: Solve for x
    x = 30,989,351.39/7,887.93
  6. Step 6: Final answer
    x = 3,928.71

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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.