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Finding the Fourth Proportional to 8,453.94, 12,708.21 and 7,845.18

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Solution

The fourth proportional to 8,453.94, 12,708.21 and 7,845.18 is: 11,793.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,453.94 : 12,708.21 = 7,845.18 : x
  2. Step 2: Convert to fraction form
    8,453.94/12,708.21 = 7,845.18/x
  3. Step 3: Cross multiply
    8,453.94x = 12,708.21 × 7,845.18
  4. Step 4: Simplify right side
    8,453.94x = 99,698,194.93
  5. Step 5: Solve for x
    x = 99,698,194.93/8,453.94
  6. Step 6: Final answer
    x = 11,793.10

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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.