Home / 7,918.54-11,867.32-4,212.78

Finding the Fourth Proportional to 7,918.54, 11,867.32 and 4,212.78

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Solution

The fourth proportional to 7,918.54, 11,867.32 and 4,212.78 is: 6,313.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,918.54 : 11,867.32 = 4,212.78 : x
  2. Step 2: Convert to fraction form
    7,918.54/11,867.32 = 4,212.78/x
  3. Step 3: Cross multiply
    7,918.54x = 11,867.32 × 4,212.78
  4. Step 4: Simplify right side
    7,918.54x = 49,994,408.35
  5. Step 5: Solve for x
    x = 49,994,408.35/7,918.54
  6. Step 6: Final answer
    x = 6,313.59

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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.