Home / 2,930.85-4,390.11-2,002.05

Finding the Fourth Proportional to 2,930.85, 4,390.11 and 2,002.05

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Solution

The fourth proportional to 2,930.85, 4,390.11 and 2,002.05 is: 2,998.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,930.85 : 4,390.11 = 2,002.05 : x
  2. Step 2: Convert to fraction form
    2,930.85/4,390.11 = 2,002.05/x
  3. Step 3: Cross multiply
    2,930.85x = 4,390.11 × 2,002.05
  4. Step 4: Simplify right side
    2,930.85x = 8,789,219.73
  5. Step 5: Solve for x
    x = 8,789,219.73/2,930.85
  6. Step 6: Final answer
    x = 2,998.86

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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.