Home / 9,119.34-13,679.62-2,879.61

Finding the Fourth Proportional to 9,119.34, 13,679.62 and 2,879.61

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Solution

The fourth proportional to 9,119.34, 13,679.62 and 2,879.61 is: 4,319.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,119.34 : 13,679.62 = 2,879.61 : x
  2. Step 2: Convert to fraction form
    9,119.34/13,679.62 = 2,879.61/x
  3. Step 3: Cross multiply
    9,119.34x = 13,679.62 × 2,879.61
  4. Step 4: Simplify right side
    9,119.34x = 39,391,912.05
  5. Step 5: Solve for x
    x = 39,391,912.05/9,119.34
  6. Step 6: Final answer
    x = 4,319.60

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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.