Home / 2,930.85-4,396.62-1,287.19

Finding the Fourth Proportional to 2,930.85, 4,396.62 and 1,287.19

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Solution

The fourth proportional to 2,930.85, 4,396.62 and 1,287.19 is: 1,930.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,930.85 : 4,396.62 = 1,287.19 : x
  2. Step 2: Convert to fraction form
    2,930.85/4,396.62 = 1,287.19/x
  3. Step 3: Cross multiply
    2,930.85x = 4,396.62 × 1,287.19
  4. Step 4: Simplify right side
    2,930.85x = 5,659,285.30
  5. Step 5: Solve for x
    x = 5,659,285.30/2,930.85
  6. Step 6: Final answer
    x = 1,930.94

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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.