Home / 2,119.23-3,163.42-1,945.89

Finding the Fourth Proportional to 2,119.23, 3,163.42 and 1,945.89

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Solution

The fourth proportional to 2,119.23, 3,163.42 and 1,945.89 is: 2,904.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,119.23 : 3,163.42 = 1,945.89 : x
  2. Step 2: Convert to fraction form
    2,119.23/3,163.42 = 1,945.89/x
  3. Step 3: Cross multiply
    2,119.23x = 3,163.42 × 1,945.89
  4. Step 4: Simplify right side
    2,119.23x = 6,155,669.78
  5. Step 5: Solve for x
    x = 6,155,669.78/2,119.23
  6. Step 6: Final answer
    x = 2,904.67

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.