Home / 2,858.36-3,945.31-1,679.81

Finding the Fourth Proportional to 2,858.36, 3,945.31 and 1,679.81

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Solution

The fourth proportional to 2,858.36, 3,945.31 and 1,679.81 is: 2,318.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,858.36 : 3,945.31 = 1,679.81 : x
  2. Step 2: Convert to fraction form
    2,858.36/3,945.31 = 1,679.81/x
  3. Step 3: Cross multiply
    2,858.36x = 3,945.31 × 1,679.81
  4. Step 4: Simplify right side
    2,858.36x = 6,627,347.27
  5. Step 5: Solve for x
    x = 6,627,347.27/2,858.36
  6. Step 6: Final answer
    x = 2,318.59

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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.