Home / 10,119.26-15,181.36-3,879.16

Finding the Fourth Proportional to 10,119.26, 15,181.36 and 3,879.16

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Solution

The fourth proportional to 10,119.26, 15,181.36 and 3,879.16 is: 5,819.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,119.26 : 15,181.36 = 3,879.16 : x
  2. Step 2: Convert to fraction form
    10,119.26/15,181.36 = 3,879.16/x
  3. Step 3: Cross multiply
    10,119.26x = 15,181.36 × 3,879.16
  4. Step 4: Simplify right side
    10,119.26x = 58,890,876.81
  5. Step 5: Solve for x
    x = 58,890,876.81/10,119.26
  6. Step 6: Final answer
    x = 5,819.68

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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.