Home / 4,254.12-6,380.10-1,912.80

Finding the Fourth Proportional to 4,254.12, 6,380.10 and 1,912.80

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Solution

The fourth proportional to 4,254.12, 6,380.10 and 1,912.80 is: 2,868.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,254.12 : 6,380.10 = 1,912.80 : x
  2. Step 2: Convert to fraction form
    4,254.12/6,380.10 = 1,912.80/x
  3. Step 3: Cross multiply
    4,254.12x = 6,380.10 × 1,912.80
  4. Step 4: Simplify right side
    4,254.12x = 12,203,855.28
  5. Step 5: Solve for x
    x = 12,203,855.28/4,254.12
  6. Step 6: Final answer
    x = 2,868.71

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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.