Home / 3,918.51-5,407.79-2,150.37

Finding the Fourth Proportional to 3,918.51, 5,407.79 and 2,150.37

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Solution

The fourth proportional to 3,918.51, 5,407.79 and 2,150.37 is: 2,967.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.51 : 5,407.79 = 2,150.37 : x
  2. Step 2: Convert to fraction form
    3,918.51/5,407.79 = 2,150.37/x
  3. Step 3: Cross multiply
    3,918.51x = 5,407.79 × 2,150.37
  4. Step 4: Simplify right side
    3,918.51x = 11,628,738.63
  5. Step 5: Solve for x
    x = 11,628,738.63/3,918.51
  6. Step 6: Final answer
    x = 2,967.64

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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.