Home / 3,431.58-4,735.68-1,939.56

Finding the Fourth Proportional to 3,431.58, 4,735.68 and 1,939.56

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Solution

The fourth proportional to 3,431.58, 4,735.68 and 1,939.56 is: 2,676.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.58 : 4,735.68 = 1,939.56 : x
  2. Step 2: Convert to fraction form
    3,431.58/4,735.68 = 1,939.56/x
  3. Step 3: Cross multiply
    3,431.58x = 4,735.68 × 1,939.56
  4. Step 4: Simplify right side
    3,431.58x = 9,185,135.50
  5. Step 5: Solve for x
    x = 9,185,135.50/3,431.58
  6. Step 6: Final answer
    x = 2,676.65

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1.5x scale

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.