Home / 3,887.84-5,365.34-2,119.56

Finding the Fourth Proportional to 3,887.84, 5,365.34 and 2,119.56

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Solution

The fourth proportional to 3,887.84, 5,365.34 and 2,119.56 is: 2,925.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,887.84 : 5,365.34 = 2,119.56 : x
  2. Step 2: Convert to fraction form
    3,887.84/5,365.34 = 2,119.56/x
  3. Step 3: Cross multiply
    3,887.84x = 5,365.34 × 2,119.56
  4. Step 4: Simplify right side
    3,887.84x = 11,372,149.45
  5. Step 5: Solve for x
    x = 11,372,149.45/3,887.84
  6. Step 6: Final answer
    x = 2,925.06

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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.