Home / 8,239.22-12,342.34-3,790.80

Finding the Fourth Proportional to 8,239.22, 12,342.34 and 3,790.80

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Solution

The fourth proportional to 8,239.22, 12,342.34 and 3,790.80 is: 5,678.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,239.22 : 12,342.34 = 3,790.80 : x
  2. Step 2: Convert to fraction form
    8,239.22/12,342.34 = 3,790.80/x
  3. Step 3: Cross multiply
    8,239.22x = 12,342.34 × 3,790.80
  4. Step 4: Simplify right side
    8,239.22x = 46,787,333.00
  5. Step 5: Solve for x
    x = 46,787,333.00/8,239.22
  6. Step 6: Final answer
    x = 5,678.62

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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.