Home / 3,431.12-4,734.78-1,939.01

Finding the Fourth Proportional to 3,431.12, 4,734.78 and 1,939.01

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Solution

The fourth proportional to 3,431.12, 4,734.78 and 1,939.01 is: 2,675.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.12 : 4,734.78 = 1,939.01 : x
  2. Step 2: Convert to fraction form
    3,431.12/4,734.78 = 1,939.01/x
  3. Step 3: Cross multiply
    3,431.12x = 4,734.78 × 1,939.01
  4. Step 4: Simplify right side
    3,431.12x = 9,180,785.77
  5. Step 5: Solve for x
    x = 9,180,785.77/3,431.12
  6. Step 6: Final answer
    x = 2,675.74

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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.