Home / 3,678.31-5,076.05-1,999.71

Finding the Fourth Proportional to 3,678.31, 5,076.05 and 1,999.71

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Solution

The fourth proportional to 3,678.31, 5,076.05 and 1,999.71 is: 2,759.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.31 : 5,076.05 = 1,999.71 : x
  2. Step 2: Convert to fraction form
    3,678.31/5,076.05 = 1,999.71/x
  3. Step 3: Cross multiply
    3,678.31x = 5,076.05 × 1,999.71
  4. Step 4: Simplify right side
    3,678.31x = 10,150,627.95
  5. Step 5: Solve for x
    x = 10,150,627.95/3,678.31
  6. Step 6: Final answer
    x = 2,759.59

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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.