Home / 3,887.99-5,365.33-2,119.56

Finding the Fourth Proportional to 3,887.99, 5,365.33 and 2,119.56

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Solution

The fourth proportional to 3,887.99, 5,365.33 and 2,119.56 is: 2,924.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,887.99 : 5,365.33 = 2,119.56 : x
  2. Step 2: Convert to fraction form
    3,887.99/5,365.33 = 2,119.56/x
  3. Step 3: Cross multiply
    3,887.99x = 5,365.33 × 2,119.56
  4. Step 4: Simplify right side
    3,887.99x = 11,372,138.85
  5. Step 5: Solve for x
    x = 11,372,138.85/3,887.99
  6. Step 6: Final answer
    x = 2,924.94

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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.