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Finding the Fourth Proportional to 8,145.84, 12,220.84 and 4,447.12

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Solution

The fourth proportional to 8,145.84, 12,220.84 and 4,447.12 is: 6,671.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,145.84 : 12,220.84 = 4,447.12 : x
  2. Step 2: Convert to fraction form
    8,145.84/12,220.84 = 4,447.12/x
  3. Step 3: Cross multiply
    8,145.84x = 12,220.84 × 4,447.12
  4. Step 4: Simplify right side
    8,145.84x = 54,347,541.98
  5. Step 5: Solve for x
    x = 54,347,541.98/8,145.84
  6. Step 6: Final answer
    x = 6,671.82

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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.