Home / 8,990.42-12,398.44-6,161.90

Finding the Fourth Proportional to 8,990.42, 12,398.44 and 6,161.90

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Solution

The fourth proportional to 8,990.42, 12,398.44 and 6,161.90 is: 8,497.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,990.42 : 12,398.44 = 6,161.90 : x
  2. Step 2: Convert to fraction form
    8,990.42/12,398.44 = 6,161.90/x
  3. Step 3: Cross multiply
    8,990.42x = 12,398.44 × 6,161.90
  4. Step 4: Simplify right side
    8,990.42x = 76,397,947.44
  5. Step 5: Solve for x
    x = 76,397,947.44/8,990.42
  6. Step 6: Final answer
    x = 8,497.71

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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.