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Finding the Fourth Proportional to 9,940.58, 14,907.22 and 2,918.79

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Solution

The fourth proportional to 9,940.58, 14,907.22 and 2,918.79 is: 4,377.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,940.58 : 14,907.22 = 2,918.79 : x
  2. Step 2: Convert to fraction form
    9,940.58/14,907.22 = 2,918.79/x
  3. Step 3: Cross multiply
    9,940.58x = 14,907.22 × 2,918.79
  4. Step 4: Simplify right side
    9,940.58x = 43,511,037.37
  5. Step 5: Solve for x
    x = 43,511,037.37/9,940.58
  6. Step 6: Final answer
    x = 4,377.11

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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.