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Finding the Fourth Proportional to 3,912.54, 5,868.78 and 2,604.78

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Solution

The fourth proportional to 3,912.54, 5,868.78 and 2,604.78 is: 3,907.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.54 : 5,868.78 = 2,604.78 : x
  2. Step 2: Convert to fraction form
    3,912.54/5,868.78 = 2,604.78/x
  3. Step 3: Cross multiply
    3,912.54x = 5,868.78 × 2,604.78
  4. Step 4: Simplify right side
    3,912.54x = 15,286,880.77
  5. Step 5: Solve for x
    x = 15,286,880.77/3,912.54
  6. Step 6: Final answer
    x = 3,907.15

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1.5x scale

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.