Home / 6,879.12-10,319.89-2,199.54

Finding the Fourth Proportional to 6,879.12, 10,319.89 and 2,199.54

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Solution

The fourth proportional to 6,879.12, 10,319.89 and 2,199.54 is: 3,299.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,879.12 : 10,319.89 = 2,199.54 : x
  2. Step 2: Convert to fraction form
    6,879.12/10,319.89 = 2,199.54/x
  3. Step 3: Cross multiply
    6,879.12x = 10,319.89 × 2,199.54
  4. Step 4: Simplify right side
    6,879.12x = 22,699,010.85
  5. Step 5: Solve for x
    x = 22,699,010.85/6,879.12
  6. Step 6: Final answer
    x = 3,299.70

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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.