Home / 3,431.40-4,735.29-1,939.28

Finding the Fourth Proportional to 3,431.40, 4,735.29 and 1,939.28

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Solution

The fourth proportional to 3,431.40, 4,735.29 and 1,939.28 is: 2,676.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.40 : 4,735.29 = 1,939.28 : x
  2. Step 2: Convert to fraction form
    3,431.40/4,735.29 = 1,939.28/x
  3. Step 3: Cross multiply
    3,431.40x = 4,735.29 × 1,939.28
  4. Step 4: Simplify right side
    3,431.40x = 9,183,029.51
  5. Step 5: Solve for x
    x = 9,183,029.51/3,431.40
  6. Step 6: Final answer
    x = 2,676.18

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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.