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Finding the Fourth Proportional to 8,812.88, 13,219.32 and 4,199.12

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Solution

The fourth proportional to 8,812.88, 13,219.32 and 4,199.12 is: 6,298.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,812.88 : 13,219.32 = 4,199.12 : x
  2. Step 2: Convert to fraction form
    8,812.88/13,219.32 = 4,199.12/x
  3. Step 3: Cross multiply
    8,812.88x = 13,219.32 × 4,199.12
  4. Step 4: Simplify right side
    8,812.88x = 55,509,511.00
  5. Step 5: Solve for x
    x = 55,509,511.00/8,812.88
  6. Step 6: Final answer
    x = 6,298.68

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Similar ratio
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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.