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Finding the Fourth Proportional to 8,216.73, 12,318.81 and 2,666.70

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Solution

The fourth proportional to 8,216.73, 12,318.81 and 2,666.70 is: 3,998.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,216.73 : 12,318.81 = 2,666.70 : x
  2. Step 2: Convert to fraction form
    8,216.73/12,318.81 = 2,666.70/x
  3. Step 3: Cross multiply
    8,216.73x = 12,318.81 × 2,666.70
  4. Step 4: Simplify right side
    8,216.73x = 32,850,570.63
  5. Step 5: Solve for x
    x = 32,850,570.63/8,216.73
  6. Step 6: Final answer
    x = 3,998.01

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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.