Home / 1,958.31-2,921.81-1,865.43

Finding the Fourth Proportional to 1,958.31, 2,921.81 and 1,865.43

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Solution

The fourth proportional to 1,958.31, 2,921.81 and 1,865.43 is: 2,783.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,958.31 : 2,921.81 = 1,865.43 : x
  2. Step 2: Convert to fraction form
    1,958.31/2,921.81 = 1,865.43/x
  3. Step 3: Cross multiply
    1,958.31x = 2,921.81 × 1,865.43
  4. Step 4: Simplify right side
    1,958.31x = 5,450,422.70
  5. Step 5: Solve for x
    x = 5,450,422.70/1,958.31
  6. Step 6: Final answer
    x = 2,783.23

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.