Home / 3,431.89-4,735.72-1,939.93

Finding the Fourth Proportional to 3,431.89, 4,735.72 and 1,939.93

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Solution

The fourth proportional to 3,431.89, 4,735.72 and 1,939.93 is: 2,676.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.89 : 4,735.72 = 1,939.93 : x
  2. Step 2: Convert to fraction form
    3,431.89/4,735.72 = 1,939.93/x
  3. Step 3: Cross multiply
    3,431.89x = 4,735.72 × 1,939.93
  4. Step 4: Simplify right side
    3,431.89x = 9,186,965.30
  5. Step 5: Solve for x
    x = 9,186,965.30/3,431.89
  6. Step 6: Final answer
    x = 2,676.94

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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.