Home / 3,887.96-5,365.51-2,119.64

Finding the Fourth Proportional to 3,887.96, 5,365.51 and 2,119.64

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Solution

The fourth proportional to 3,887.96, 5,365.51 and 2,119.64 is: 2,925.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,887.96 : 5,365.51 = 2,119.64 : x
  2. Step 2: Convert to fraction form
    3,887.96/5,365.51 = 2,119.64/x
  3. Step 3: Cross multiply
    3,887.96x = 5,365.51 × 2,119.64
  4. Step 4: Simplify right side
    3,887.96x = 11,372,917.49
  5. Step 5: Solve for x
    x = 11,372,917.49/3,887.96
  6. Step 6: Final answer
    x = 2,925.17

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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.