Home / 3,158.30-4,732.21-1,921.97

Finding the Fourth Proportional to 3,158.30, 4,732.21 and 1,921.97

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Solution

The fourth proportional to 3,158.30, 4,732.21 and 1,921.97 is: 2,879.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,158.30 : 4,732.21 = 1,921.97 : x
  2. Step 2: Convert to fraction form
    3,158.30/4,732.21 = 1,921.97/x
  3. Step 3: Cross multiply
    3,158.30x = 4,732.21 × 1,921.97
  4. Step 4: Simplify right side
    3,158.30x = 9,095,137.19
  5. Step 5: Solve for x
    x = 9,095,137.19/3,158.30
  6. Step 6: Final answer
    x = 2,879.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.