Home / 1,861.96-2,791.34-1,039.56

Finding the Fourth Proportional to 1,861.96, 2,791.34 and 1,039.56

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Solution

The fourth proportional to 1,861.96, 2,791.34 and 1,039.56 is: 1,558.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861.96 : 2,791.34 = 1,039.56 : x
  2. Step 2: Convert to fraction form
    1,861.96/2,791.34 = 1,039.56/x
  3. Step 3: Cross multiply
    1,861.96x = 2,791.34 × 1,039.56
  4. Step 4: Simplify right side
    1,861.96x = 2,901,765.41
  5. Step 5: Solve for x
    x = 2,901,765.41/1,861.96
  6. Step 6: Final answer
    x = 1,558.45

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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.