Home / 8,107.02-12,155.66-3,170.78

Finding the Fourth Proportional to 8,107.02, 12,155.66 and 3,170.78

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Solution

The fourth proportional to 8,107.02, 12,155.66 and 3,170.78 is: 4,754.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,107.02 : 12,155.66 = 3,170.78 : x
  2. Step 2: Convert to fraction form
    8,107.02/12,155.66 = 3,170.78/x
  3. Step 3: Cross multiply
    8,107.02x = 12,155.66 × 3,170.78
  4. Step 4: Simplify right side
    8,107.02x = 38,542,846.98
  5. Step 5: Solve for x
    x = 38,542,846.98/8,107.02
  6. Step 6: Final answer
    x = 4,754.26

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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.