Home / 9,119.30-13,679.94-2,879.48

Finding the Fourth Proportional to 9,119.30, 13,679.94 and 2,879.48

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Solution

The fourth proportional to 9,119.30, 13,679.94 and 2,879.48 is: 4,319.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,119.30 : 13,679.94 = 2,879.48 : x
  2. Step 2: Convert to fraction form
    9,119.30/13,679.94 = 2,879.48/x
  3. Step 3: Cross multiply
    9,119.30x = 13,679.94 × 2,879.48
  4. Step 4: Simplify right side
    9,119.30x = 39,391,113.63
  5. Step 5: Solve for x
    x = 39,391,113.63/9,119.30
  6. Step 6: Final answer
    x = 4,319.53

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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.