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Finding the Fourth Proportional to 8,548.57, 12,821.22 and 3,621.67

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Solution

The fourth proportional to 8,548.57, 12,821.22 and 3,621.67 is: 5,431.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,548.57 : 12,821.22 = 3,621.67 : x
  2. Step 2: Convert to fraction form
    8,548.57/12,821.22 = 3,621.67/x
  3. Step 3: Cross multiply
    8,548.57x = 12,821.22 × 3,621.67
  4. Step 4: Simplify right side
    8,548.57x = 46,434,227.84
  5. Step 5: Solve for x
    x = 46,434,227.84/8,548.57
  6. Step 6: Final answer
    x = 5,431.81

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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.