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Finding the Fourth Proportional to 7,940.10, 11,912.13 and 2,393.32

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Solution

The fourth proportional to 7,940.10, 11,912.13 and 2,393.32 is: 3,590.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,940.10 : 11,912.13 = 2,393.32 : x
  2. Step 2: Convert to fraction form
    7,940.10/11,912.13 = 2,393.32/x
  3. Step 3: Cross multiply
    7,940.10x = 11,912.13 × 2,393.32
  4. Step 4: Simplify right side
    7,940.10x = 28,509,538.97
  5. Step 5: Solve for x
    x = 28,509,538.97/7,940.10
  6. Step 6: Final answer
    x = 3,590.58

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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.