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Finding the Fourth Proportional to 8,480.85, 12,729.03 and 4,323.84

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Solution

The fourth proportional to 8,480.85, 12,729.03 and 4,323.84 is: 6,489.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,480.85 : 12,729.03 = 4,323.84 : x
  2. Step 2: Convert to fraction form
    8,480.85/12,729.03 = 4,323.84/x
  3. Step 3: Cross multiply
    8,480.85x = 12,729.03 × 4,323.84
  4. Step 4: Simplify right side
    8,480.85x = 55,038,225.43
  5. Step 5: Solve for x
    x = 55,038,225.43/8,480.85
  6. Step 6: Final answer
    x = 6,489.71

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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.