Home / 8,872.43-12,231.23-6,980.73

Finding the Fourth Proportional to 8,872.43, 12,231.23 and 6,980.73

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Solution

The fourth proportional to 8,872.43, 12,231.23 and 6,980.73 is: 9,623.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,872.43 : 12,231.23 = 6,980.73 : x
  2. Step 2: Convert to fraction form
    8,872.43/12,231.23 = 6,980.73/x
  3. Step 3: Cross multiply
    8,872.43x = 12,231.23 × 6,980.73
  4. Step 4: Simplify right side
    8,872.43x = 85,382,879.29
  5. Step 5: Solve for x
    x = 85,382,879.29/8,872.43
  6. Step 6: Final answer
    x = 9,623.40

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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.