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Finding the Fourth Proportional to 3,040.75, 4,561.49 and 849.49

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Solution

The fourth proportional to 3,040.75, 4,561.49 and 849.49 is: 1,274.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,040.75 : 4,561.49 = 849.49 : x
  2. Step 2: Convert to fraction form
    3,040.75/4,561.49 = 849.49/x
  3. Step 3: Cross multiply
    3,040.75x = 4,561.49 × 849.49
  4. Step 4: Simplify right side
    3,040.75x = 3,874,940.14
  5. Step 5: Solve for x
    x = 3,874,940.14/3,040.75
  6. Step 6: Final answer
    x = 1,274.34

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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.