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Finding the Fourth Proportional to 8,300.40, 12,447.36 and 3,103.44

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Solution

The fourth proportional to 8,300.40, 12,447.36 and 3,103.44 is: 4,653.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,300.40 : 12,447.36 = 3,103.44 : x
  2. Step 2: Convert to fraction form
    8,300.40/12,447.36 = 3,103.44/x
  3. Step 3: Cross multiply
    8,300.40x = 12,447.36 × 3,103.44
  4. Step 4: Simplify right side
    8,300.40x = 38,629,634.92
  5. Step 5: Solve for x
    x = 38,629,634.92/8,300.40
  6. Step 6: Final answer
    x = 4,653.95

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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.