Home / 2,861.58-4,289.90-1,107.81

Finding the Fourth Proportional to 2,861.58, 4,289.90 and 1,107.81

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Solution

The fourth proportional to 2,861.58, 4,289.90 and 1,107.81 is: 1,660.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,861.58 : 4,289.90 = 1,107.81 : x
  2. Step 2: Convert to fraction form
    2,861.58/4,289.90 = 1,107.81/x
  3. Step 3: Cross multiply
    2,861.58x = 4,289.90 × 1,107.81
  4. Step 4: Simplify right side
    2,861.58x = 4,752,394.12
  5. Step 5: Solve for x
    x = 4,752,394.12/2,861.58
  6. Step 6: Final answer
    x = 1,660.76

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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.