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Finding the Fourth Proportional to 8,812.56, 13,228.56 and 5,118.96

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Solution

The fourth proportional to 8,812.56, 13,228.56 and 5,118.96 is: 7,684.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,812.56 : 13,228.56 = 5,118.96 : x
  2. Step 2: Convert to fraction form
    8,812.56/13,228.56 = 5,118.96/x
  3. Step 3: Cross multiply
    8,812.56x = 13,228.56 × 5,118.96
  4. Step 4: Simplify right side
    8,812.56x = 67,716,469.50
  5. Step 5: Solve for x
    x = 67,716,469.50/8,812.56
  6. Step 6: Final answer
    x = 7,684.09

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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.