Home / 3,621.15-5,428.49-1,887.75

Finding the Fourth Proportional to 3,621.15, 5,428.49 and 1,887.75

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Solution

The fourth proportional to 3,621.15, 5,428.49 and 1,887.75 is: 2,829.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,621.15 : 5,428.49 = 1,887.75 : x
  2. Step 2: Convert to fraction form
    3,621.15/5,428.49 = 1,887.75/x
  3. Step 3: Cross multiply
    3,621.15x = 5,428.49 × 1,887.75
  4. Step 4: Simplify right side
    3,621.15x = 10,247,622.56
  5. Step 5: Solve for x
    x = 10,247,622.56/3,621.15
  6. Step 6: Final answer
    x = 2,829.94

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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.