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Finding the Fourth Proportional to 8,222.79, 12,316.49 and 5,450.79

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Solution

The fourth proportional to 8,222.79, 12,316.49 and 5,450.79 is: 8,164.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,222.79 : 12,316.49 = 5,450.79 : x
  2. Step 2: Convert to fraction form
    8,222.79/12,316.49 = 5,450.79/x
  3. Step 3: Cross multiply
    8,222.79x = 12,316.49 × 5,450.79
  4. Step 4: Simplify right side
    8,222.79x = 67,134,573.27
  5. Step 5: Solve for x
    x = 67,134,573.27/8,222.79
  6. Step 6: Final answer
    x = 8,164.45

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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.