Home / 3,621.90-5,431.76-1,889.58

Finding the Fourth Proportional to 3,621.90, 5,431.76 and 1,889.58

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Solution

The fourth proportional to 3,621.90, 5,431.76 and 1,889.58 is: 2,833.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,621.90 : 5,431.76 = 1,889.58 : x
  2. Step 2: Convert to fraction form
    3,621.90/5,431.76 = 1,889.58/x
  3. Step 3: Cross multiply
    3,621.90x = 5,431.76 × 1,889.58
  4. Step 4: Simplify right side
    3,621.90x = 10,263,745.06
  5. Step 5: Solve for x
    x = 10,263,745.06/3,621.90
  6. Step 6: Final answer
    x = 2,833.80

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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.