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Finding the Fourth Proportional to 8,072.76, 12,108.81 and 2,808.98

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Solution

The fourth proportional to 8,072.76, 12,108.81 and 2,808.98 is: 4,213.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,072.76 : 12,108.81 = 2,808.98 : x
  2. Step 2: Convert to fraction form
    8,072.76/12,108.81 = 2,808.98/x
  3. Step 3: Cross multiply
    8,072.76x = 12,108.81 × 2,808.98
  4. Step 4: Simplify right side
    8,072.76x = 34,013,330.52
  5. Step 5: Solve for x
    x = 34,013,330.52/8,072.76
  6. Step 6: Final answer
    x = 4,213.35

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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.