Home / 8,085.62-12,128.90-2,162.36

Finding the Fourth Proportional to 8,085.62, 12,128.90 and 2,162.36

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Solution

The fourth proportional to 8,085.62, 12,128.90 and 2,162.36 is: 3,243.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,085.62 : 12,128.90 = 2,162.36 : x
  2. Step 2: Convert to fraction form
    8,085.62/12,128.90 = 2,162.36/x
  3. Step 3: Cross multiply
    8,085.62x = 12,128.90 × 2,162.36
  4. Step 4: Simplify right side
    8,085.62x = 26,226,976.75
  5. Step 5: Solve for x
    x = 26,226,976.75/8,085.62
  6. Step 6: Final answer
    x = 3,243.66

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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.