Home / 8,622.18-12,936.33-4,242.69

Finding the Fourth Proportional to 8,622.18, 12,936.33 and 4,242.69

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Solution

The fourth proportional to 8,622.18, 12,936.33 and 4,242.69 is: 6,365.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,622.18 : 12,936.33 = 4,242.69 : x
  2. Step 2: Convert to fraction form
    8,622.18/12,936.33 = 4,242.69/x
  3. Step 3: Cross multiply
    8,622.18x = 12,936.33 × 4,242.69
  4. Step 4: Simplify right side
    8,622.18x = 54,884,837.93
  5. Step 5: Solve for x
    x = 54,884,837.93/8,622.18
  6. Step 6: Final answer
    x = 6,365.54

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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.