Home / 3,431.47-4,735.42-1,939.39

Finding the Fourth Proportional to 3,431.47, 4,735.42 and 1,939.39

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Solution

The fourth proportional to 3,431.47, 4,735.42 and 1,939.39 is: 2,676.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.47 : 4,735.42 = 1,939.39 : x
  2. Step 2: Convert to fraction form
    3,431.47/4,735.42 = 1,939.39/x
  3. Step 3: Cross multiply
    3,431.47x = 4,735.42 × 1,939.39
  4. Step 4: Simplify right side
    3,431.47x = 9,183,826.19
  5. Step 5: Solve for x
    x = 9,183,826.19/3,431.47
  6. Step 6: Final answer
    x = 2,676.35

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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.