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Finding the Fourth Proportional to 8,093.80, 12,140.62 and 2,621.80

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Solution

The fourth proportional to 8,093.80, 12,140.62 and 2,621.80 is: 3,932.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,093.80 : 12,140.62 = 2,621.80 : x
  2. Step 2: Convert to fraction form
    8,093.80/12,140.62 = 2,621.80/x
  3. Step 3: Cross multiply
    8,093.80x = 12,140.62 × 2,621.80
  4. Step 4: Simplify right side
    8,093.80x = 31,830,277.52
  5. Step 5: Solve for x
    x = 31,830,277.52/8,093.80
  6. Step 6: Final answer
    x = 3,932.67

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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.