Home / 6,920.38-10,380.46-3,220.54

Finding the Fourth Proportional to 6,920.38, 10,380.46 and 3,220.54

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Solution

The fourth proportional to 6,920.38, 10,380.46 and 3,220.54 is: 4,830.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,920.38 : 10,380.46 = 3,220.54 : x
  2. Step 2: Convert to fraction form
    6,920.38/10,380.46 = 3,220.54/x
  3. Step 3: Cross multiply
    6,920.38x = 10,380.46 × 3,220.54
  4. Step 4: Simplify right side
    6,920.38x = 33,430,686.65
  5. Step 5: Solve for x
    x = 33,430,686.65/6,920.38
  6. Step 6: Final answer
    x = 4,830.76

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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.