Home / 3,431.30-4,735.48-1,939.58

Finding the Fourth Proportional to 3,431.30, 4,735.48 and 1,939.58

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Solution

The fourth proportional to 3,431.30, 4,735.48 and 1,939.58 is: 2,676.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.30 : 4,735.48 = 1,939.58 : x
  2. Step 2: Convert to fraction form
    3,431.30/4,735.48 = 1,939.58/x
  3. Step 3: Cross multiply
    3,431.30x = 4,735.48 × 1,939.58
  4. Step 4: Simplify right side
    3,431.30x = 9,184,842.30
  5. Step 5: Solve for x
    x = 9,184,842.30/3,431.30
  6. Step 6: Final answer
    x = 2,676.78

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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.