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Finding the Fourth Proportional to 3,868.03, 5,338.14 and 2,189.43

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Solution

The fourth proportional to 3,868.03, 5,338.14 and 2,189.43 is: 3,021.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,868.03 : 5,338.14 = 2,189.43 : x
  2. Step 2: Convert to fraction form
    3,868.03/5,338.14 = 2,189.43/x
  3. Step 3: Cross multiply
    3,868.03x = 5,338.14 × 2,189.43
  4. Step 4: Simplify right side
    3,868.03x = 11,687,483.86
  5. Step 5: Solve for x
    x = 11,687,483.86/3,868.03
  6. Step 6: Final answer
    x = 3,021.56

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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.