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Finding the Fourth Proportional to 8,213.63, 12,320.44 and 2,057.63

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Solution

The fourth proportional to 8,213.63, 12,320.44 and 2,057.63 is: 3,086.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,213.63 : 12,320.44 = 2,057.63 : x
  2. Step 2: Convert to fraction form
    8,213.63/12,320.44 = 2,057.63/x
  3. Step 3: Cross multiply
    8,213.63x = 12,320.44 × 2,057.63
  4. Step 4: Simplify right side
    8,213.63x = 25,350,840.21
  5. Step 5: Solve for x
    x = 25,350,840.21/8,213.63
  6. Step 6: Final answer
    x = 3,086.44

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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.