Home / 3,431.56-4,735.48-1,939.28

Finding the Fourth Proportional to 3,431.56, 4,735.48 and 1,939.28

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Solution

The fourth proportional to 3,431.56, 4,735.48 and 1,939.28 is: 2,676.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.56 : 4,735.48 = 1,939.28 : x
  2. Step 2: Convert to fraction form
    3,431.56/4,735.48 = 1,939.28/x
  3. Step 3: Cross multiply
    3,431.56x = 4,735.48 × 1,939.28
  4. Step 4: Simplify right side
    3,431.56x = 9,183,421.65
  5. Step 5: Solve for x
    x = 9,183,421.65/3,431.56
  6. Step 6: Final answer
    x = 2,676.17

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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.