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Finding the Fourth Proportional to 8,005.80, 11,993.40 and 4,306.80

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Solution

The fourth proportional to 8,005.80, 11,993.40 and 4,306.80 is: 6,451.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,005.80 : 11,993.40 = 4,306.80 : x
  2. Step 2: Convert to fraction form
    8,005.80/11,993.40 = 4,306.80/x
  3. Step 3: Cross multiply
    8,005.80x = 11,993.40 × 4,306.80
  4. Step 4: Simplify right side
    8,005.80x = 51,653,175.12
  5. Step 5: Solve for x
    x = 51,653,175.12/8,005.80
  6. Step 6: Final answer
    x = 6,451.97

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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.