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Finding the Fourth Proportional to 8,205.80, 12,308.70 and 4,506.60

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Solution

The fourth proportional to 8,205.80, 12,308.70 and 4,506.60 is: 6,759.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,205.80 : 12,308.70 = 4,506.60 : x
  2. Step 2: Convert to fraction form
    8,205.80/12,308.70 = 4,506.60/x
  3. Step 3: Cross multiply
    8,205.80x = 12,308.70 × 4,506.60
  4. Step 4: Simplify right side
    8,205.80x = 55,470,387.42
  5. Step 5: Solve for x
    x = 55,470,387.42/8,205.80
  6. Step 6: Final answer
    x = 6,759.90

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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.