Home / 11,879.41-17,817.75-3,115.02

Finding the Fourth Proportional to 11,879.41, 17,817.75 and 3,115.02

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Solution

The fourth proportional to 11,879.41, 17,817.75 and 3,115.02 is: 4,672.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,879.41 : 17,817.75 = 3,115.02 : x
  2. Step 2: Convert to fraction form
    11,879.41/17,817.75 = 3,115.02/x
  3. Step 3: Cross multiply
    11,879.41x = 17,817.75 × 3,115.02
  4. Step 4: Simplify right side
    11,879.41x = 55,502,647.61
  5. Step 5: Solve for x
    x = 55,502,647.61/11,879.41
  6. Step 6: Final answer
    x = 4,672.17

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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.