Home / 8,191.58-12,281.09-3,805.83

Finding the Fourth Proportional to 8,191.58, 12,281.09 and 3,805.83

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Solution

The fourth proportional to 8,191.58, 12,281.09 and 3,805.83 is: 5,705.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,191.58 : 12,281.09 = 3,805.83 : x
  2. Step 2: Convert to fraction form
    8,191.58/12,281.09 = 3,805.83/x
  3. Step 3: Cross multiply
    8,191.58x = 12,281.09 × 3,805.83
  4. Step 4: Simplify right side
    8,191.58x = 46,739,721.73
  5. Step 5: Solve for x
    x = 46,739,721.73/8,191.58
  6. Step 6: Final answer
    x = 5,705.83

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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.