Home / 8,125.12-12,185.18-4,227.40

Finding the Fourth Proportional to 8,125.12, 12,185.18 and 4,227.40

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Solution

The fourth proportional to 8,125.12, 12,185.18 and 4,227.40 is: 6,339.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,125.12 : 12,185.18 = 4,227.40 : x
  2. Step 2: Convert to fraction form
    8,125.12/12,185.18 = 4,227.40/x
  3. Step 3: Cross multiply
    8,125.12x = 12,185.18 × 4,227.40
  4. Step 4: Simplify right side
    8,125.12x = 51,511,629.93
  5. Step 5: Solve for x
    x = 51,511,629.93/8,125.12
  6. Step 6: Final answer
    x = 6,339.80

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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.