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Finding the Fourth Proportional to 8,330.75, 12,489.59 and 4,168.67

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Solution

The fourth proportional to 8,330.75, 12,489.59 and 4,168.67 is: 6,249.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,330.75 : 12,489.59 = 4,168.67 : x
  2. Step 2: Convert to fraction form
    8,330.75/12,489.59 = 4,168.67/x
  3. Step 3: Cross multiply
    8,330.75x = 12,489.59 × 4,168.67
  4. Step 4: Simplify right side
    8,330.75x = 52,064,927.12
  5. Step 5: Solve for x
    x = 52,064,927.12/8,330.75
  6. Step 6: Final answer
    x = 6,249.73

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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.