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Finding the Fourth Proportional to 8,203.92, 12,305.94 and 3,519.99

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Solution

The fourth proportional to 8,203.92, 12,305.94 and 3,519.99 is: 5,280.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,203.92 : 12,305.94 = 3,519.99 : x
  2. Step 2: Convert to fraction form
    8,203.92/12,305.94 = 3,519.99/x
  3. Step 3: Cross multiply
    8,203.92x = 12,305.94 × 3,519.99
  4. Step 4: Simplify right side
    8,203.92x = 43,316,785.74
  5. Step 5: Solve for x
    x = 43,316,785.74/8,203.92
  6. Step 6: Final answer
    x = 5,280.01

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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.