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Finding the Fourth Proportional to 8,349.48, 11,520.09 and 4,812.48

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Solution

The fourth proportional to 8,349.48, 11,520.09 and 4,812.48 is: 6,639.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,349.48 : 11,520.09 = 4,812.48 : x
  2. Step 2: Convert to fraction form
    8,349.48/11,520.09 = 4,812.48/x
  3. Step 3: Cross multiply
    8,349.48x = 11,520.09 × 4,812.48
  4. Step 4: Simplify right side
    8,349.48x = 55,440,202.72
  5. Step 5: Solve for x
    x = 55,440,202.72/8,349.48
  6. Step 6: Final answer
    x = 6,639.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.