Home / 4,920.80-7,379.88-3,360.54

Finding the Fourth Proportional to 4,920.80, 7,379.88 and 3,360.54

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Solution

The fourth proportional to 4,920.80, 7,379.88 and 3,360.54 is: 5,039.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,920.80 : 7,379.88 = 3,360.54 : x
  2. Step 2: Convert to fraction form
    4,920.80/7,379.88 = 3,360.54/x
  3. Step 3: Cross multiply
    4,920.80x = 7,379.88 × 3,360.54
  4. Step 4: Simplify right side
    4,920.80x = 24,800,345.04
  5. Step 5: Solve for x
    x = 24,800,345.04/4,920.80
  6. Step 6: Final answer
    x = 5,039.90

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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.