Home / 3,887.78-5,365.97-2,561.60

Finding the Fourth Proportional to 3,887.78, 5,365.97 and 2,561.60

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Solution

The fourth proportional to 3,887.78, 5,365.97 and 2,561.60 is: 3,535.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,887.78 : 5,365.97 = 2,561.60 : x
  2. Step 2: Convert to fraction form
    3,887.78/5,365.97 = 2,561.60/x
  3. Step 3: Cross multiply
    3,887.78x = 5,365.97 × 2,561.60
  4. Step 4: Simplify right side
    3,887.78x = 13,745,468.75
  5. Step 5: Solve for x
    x = 13,745,468.75/3,887.78
  6. Step 6: Final answer
    x = 3,535.56

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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.