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Finding the Fourth Proportional to 3,940.50, 5,907.56 and 1,474.98

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Solution

The fourth proportional to 3,940.50, 5,907.56 and 1,474.98 is: 2,211.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940.50 : 5,907.56 = 1,474.98 : x
  2. Step 2: Convert to fraction form
    3,940.50/5,907.56 = 1,474.98/x
  3. Step 3: Cross multiply
    3,940.50x = 5,907.56 × 1,474.98
  4. Step 4: Simplify right side
    3,940.50x = 8,713,532.85
  5. Step 5: Solve for x
    x = 8,713,532.85/3,940.50
  6. Step 6: Final answer
    x = 2,211.28

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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.