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Finding the Fourth Proportional to 1,826.56, 2,739.99 and 786.59

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Solution

The fourth proportional to 1,826.56, 2,739.99 and 786.59 is: 1,179.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,826.56 : 2,739.99 = 786.59 : x
  2. Step 2: Convert to fraction form
    1,826.56/2,739.99 = 786.59/x
  3. Step 3: Cross multiply
    1,826.56x = 2,739.99 × 786.59
  4. Step 4: Simplify right side
    1,826.56x = 2,155,235.03
  5. Step 5: Solve for x
    x = 2,155,235.03/1,826.56
  6. Step 6: Final answer
    x = 1,179.94

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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.