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Finding the Fourth Proportional to 8,073.75, 12,111.66 and 2,879.67

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Solution

The fourth proportional to 8,073.75, 12,111.66 and 2,879.67 is: 4,319.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,073.75 : 12,111.66 = 2,879.67 : x
  2. Step 2: Convert to fraction form
    8,073.75/12,111.66 = 2,879.67/x
  3. Step 3: Cross multiply
    8,073.75x = 12,111.66 × 2,879.67
  4. Step 4: Simplify right side
    8,073.75x = 34,877,583.95
  5. Step 5: Solve for x
    x = 34,877,583.95/8,073.75
  6. Step 6: Final answer
    x = 4,319.87

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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.