Home / 3,678.44-5,076.26-1,999.86

Finding the Fourth Proportional to 3,678.44, 5,076.26 and 1,999.86

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Solution

The fourth proportional to 3,678.44, 5,076.26 and 1,999.86 is: 2,759.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.44 : 5,076.26 = 1,999.86 : x
  2. Step 2: Convert to fraction form
    3,678.44/5,076.26 = 1,999.86/x
  3. Step 3: Cross multiply
    3,678.44x = 5,076.26 × 1,999.86
  4. Step 4: Simplify right side
    3,678.44x = 10,151,808.34
  5. Step 5: Solve for x
    x = 10,151,808.34/3,678.44
  6. Step 6: Final answer
    x = 2,759.82

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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.