Home / 8,891.28-12,270.24-4,912.65

Finding the Fourth Proportional to 8,891.28, 12,270.24 and 4,912.65

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Solution

The fourth proportional to 8,891.28, 12,270.24 and 4,912.65 is: 6,779.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,891.28 : 12,270.24 = 4,912.65 : x
  2. Step 2: Convert to fraction form
    8,891.28/12,270.24 = 4,912.65/x
  3. Step 3: Cross multiply
    8,891.28x = 12,270.24 × 4,912.65
  4. Step 4: Simplify right side
    8,891.28x = 60,279,394.54
  5. Step 5: Solve for x
    x = 60,279,394.54/8,891.28
  6. Step 6: Final answer
    x = 6,779.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.