Home / 1,939.31-2,912.70-1,662.29

Finding the Fourth Proportional to 1,939.31, 2,912.70 and 1,662.29

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Solution

The fourth proportional to 1,939.31, 2,912.70 and 1,662.29 is: 2,496.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.31 : 2,912.70 = 1,662.29 : x
  2. Step 2: Convert to fraction form
    1,939.31/2,912.70 = 1,662.29/x
  3. Step 3: Cross multiply
    1,939.31x = 2,912.70 × 1,662.29
  4. Step 4: Simplify right side
    1,939.31x = 4,841,752.08
  5. Step 5: Solve for x
    x = 4,841,752.08/1,939.31
  6. Step 6: Final answer
    x = 2,496.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.