Home / 8,771.28-13,161.78-3,576.78

Finding the Fourth Proportional to 8,771.28, 13,161.78 and 3,576.78

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Solution

The fourth proportional to 8,771.28, 13,161.78 and 3,576.78 is: 5,367.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,771.28 : 13,161.78 = 3,576.78 : x
  2. Step 2: Convert to fraction form
    8,771.28/13,161.78 = 3,576.78/x
  3. Step 3: Cross multiply
    8,771.28x = 13,161.78 × 3,576.78
  4. Step 4: Simplify right side
    8,771.28x = 47,076,791.47
  5. Step 5: Solve for x
    x = 47,076,791.47/8,771.28
  6. Step 6: Final answer
    x = 5,367.15

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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.