Home / 3,942.09-5,440.01-2,173.86

Finding the Fourth Proportional to 3,942.09, 5,440.01 and 2,173.86

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Solution

The fourth proportional to 3,942.09, 5,440.01 and 2,173.86 is: 2,999.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,942.09 : 5,440.01 = 2,173.86 : x
  2. Step 2: Convert to fraction form
    3,942.09/5,440.01 = 2,173.86/x
  3. Step 3: Cross multiply
    3,942.09x = 5,440.01 × 2,173.86
  4. Step 4: Simplify right side
    3,942.09x = 11,825,820.14
  5. Step 5: Solve for x
    x = 11,825,820.14/3,942.09
  6. Step 6: Final answer
    x = 2,999.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.