Home / 8,521.10-12,781.58-2,195.97

Finding the Fourth Proportional to 8,521.10, 12,781.58 and 2,195.97

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Solution

The fourth proportional to 8,521.10, 12,781.58 and 2,195.97 is: 3,293.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,521.10 : 12,781.58 = 2,195.97 : x
  2. Step 2: Convert to fraction form
    8,521.10/12,781.58 = 2,195.97/x
  3. Step 3: Cross multiply
    8,521.10x = 12,781.58 × 2,195.97
  4. Step 4: Simplify right side
    8,521.10x = 28,067,919.67
  5. Step 5: Solve for x
    x = 28,067,919.67/8,521.10
  6. Step 6: Final answer
    x = 3,293.93

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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.