Home / 5,379.12-8,073.63-3,879.69

Finding the Fourth Proportional to 5,379.12, 8,073.63 and 3,879.69

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Solution

The fourth proportional to 5,379.12, 8,073.63 and 3,879.69 is: 5,823.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,379.12 : 8,073.63 = 3,879.69 : x
  2. Step 2: Convert to fraction form
    5,379.12/8,073.63 = 3,879.69/x
  3. Step 3: Cross multiply
    5,379.12x = 8,073.63 × 3,879.69
  4. Step 4: Simplify right side
    5,379.12x = 31,323,181.57
  5. Step 5: Solve for x
    x = 31,323,181.57/5,379.12
  6. Step 6: Final answer
    x = 5,823.11

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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.