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Finding the Fourth Proportional to 8,544.40, 12,791.40 and 6,362.80

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Solution

The fourth proportional to 8,544.40, 12,791.40 and 6,362.80 is: 9,525.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,544.40 : 12,791.40 = 6,362.80 : x
  2. Step 2: Convert to fraction form
    8,544.40/12,791.40 = 6,362.80/x
  3. Step 3: Cross multiply
    8,544.40x = 12,791.40 × 6,362.80
  4. Step 4: Simplify right side
    8,544.40x = 81,389,119.92
  5. Step 5: Solve for x
    x = 81,389,119.92/8,544.40
  6. Step 6: Final answer
    x = 9,525.43

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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.