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Finding the Fourth Proportional to 8,195.44, 12,289.92 and 5,292.40

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Solution

The fourth proportional to 8,195.44, 12,289.92 and 5,292.40 is: 7,936.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,195.44 : 12,289.92 = 5,292.40 : x
  2. Step 2: Convert to fraction form
    8,195.44/12,289.92 = 5,292.40/x
  3. Step 3: Cross multiply
    8,195.44x = 12,289.92 × 5,292.40
  4. Step 4: Simplify right side
    8,195.44x = 65,043,172.61
  5. Step 5: Solve for x
    x = 65,043,172.61/8,195.44
  6. Step 6: Final answer
    x = 7,936.51

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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.