Home / 8,622.06-12,920.94-3,930.54

Finding the Fourth Proportional to 8,622.06, 12,920.94 and 3,930.54

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Solution

The fourth proportional to 8,622.06, 12,920.94 and 3,930.54 is: 5,890.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,622.06 : 12,920.94 = 3,930.54 : x
  2. Step 2: Convert to fraction form
    8,622.06/12,920.94 = 3,930.54/x
  3. Step 3: Cross multiply
    8,622.06x = 12,920.94 × 3,930.54
  4. Step 4: Simplify right side
    8,622.06x = 50,786,271.51
  5. Step 5: Solve for x
    x = 50,786,271.51/8,622.06
  6. Step 6: Final answer
    x = 5,890.27

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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.