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Finding the Fourth Proportional to 8,234.55, 12,354.12 and 2,688.23

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Solution

The fourth proportional to 8,234.55, 12,354.12 and 2,688.23 is: 4,033.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,234.55 : 12,354.12 = 2,688.23 : x
  2. Step 2: Convert to fraction form
    8,234.55/12,354.12 = 2,688.23/x
  3. Step 3: Cross multiply
    8,234.55x = 12,354.12 × 2,688.23
  4. Step 4: Simplify right side
    8,234.55x = 33,210,660.03
  5. Step 5: Solve for x
    x = 33,210,660.03/8,234.55
  6. Step 6: Final answer
    x = 4,033.09

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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.