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Finding the Fourth Proportional to 8,214, 12,322.74 and 2,666.92

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Solution

The fourth proportional to 8,214, 12,322.74 and 2,666.92 is: 4,000.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,214 : 12,322.74 = 2,666.92 : x
  2. Step 2: Convert to fraction form
    8,214/12,322.74 = 2,666.92/x
  3. Step 3: Cross multiply
    8,214x = 12,322.74 × 2,666.92
  4. Step 4: Simplify right side
    8,214x = 32,863,761.76
  5. Step 5: Solve for x
    x = 32,863,761.76/8,214
  6. Step 6: Final answer
    x = 4,000.94

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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.