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Finding the Fourth Proportional to 11,873.92, 17,811.92 and 3,108.84

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Solution

The fourth proportional to 11,873.92, 17,811.92 and 3,108.84 is: 4,663.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,873.92 : 17,811.92 = 3,108.84 : x
  2. Step 2: Convert to fraction form
    11,873.92/17,811.92 = 3,108.84/x
  3. Step 3: Cross multiply
    11,873.92x = 17,811.92 × 3,108.84
  4. Step 4: Simplify right side
    11,873.92x = 55,374,409.37
  5. Step 5: Solve for x
    x = 55,374,409.37/11,873.92
  6. Step 6: Final answer
    x = 4,663.53

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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.