Home / 8,076.20-12,107.10-4,785.80

Finding the Fourth Proportional to 8,076.20, 12,107.10 and 4,785.80

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Solution

The fourth proportional to 8,076.20, 12,107.10 and 4,785.80 is: 7,174.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,076.20 : 12,107.10 = 4,785.80 : x
  2. Step 2: Convert to fraction form
    8,076.20/12,107.10 = 4,785.80/x
  3. Step 3: Cross multiply
    8,076.20x = 12,107.10 × 4,785.80
  4. Step 4: Simplify right side
    8,076.20x = 57,942,159.18
  5. Step 5: Solve for x
    x = 57,942,159.18/8,076.20
  6. Step 6: Final answer
    x = 7,174.43

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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.