Home / 3,945.42-5,912.49-2,897.19

Finding the Fourth Proportional to 3,945.42, 5,912.49 and 2,897.19

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Solution

The fourth proportional to 3,945.42, 5,912.49 and 2,897.19 is: 4,341.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945.42 : 5,912.49 = 2,897.19 : x
  2. Step 2: Convert to fraction form
    3,945.42/5,912.49 = 2,897.19/x
  3. Step 3: Cross multiply
    3,945.42x = 5,912.49 × 2,897.19
  4. Step 4: Simplify right side
    3,945.42x = 17,129,618.21
  5. Step 5: Solve for x
    x = 17,129,618.21/3,945.42
  6. Step 6: Final answer
    x = 4,341.65

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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.