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Finding the Fourth Proportional to 3,959.53, 5,939.33 and 1,185.99

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Solution

The fourth proportional to 3,959.53, 5,939.33 and 1,185.99 is: 1,779.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,959.53 : 5,939.33 = 1,185.99 : x
  2. Step 2: Convert to fraction form
    3,959.53/5,939.33 = 1,185.99/x
  3. Step 3: Cross multiply
    3,959.53x = 5,939.33 × 1,185.99
  4. Step 4: Simplify right side
    3,959.53x = 7,043,991.19
  5. Step 5: Solve for x
    x = 7,043,991.19/3,959.53
  6. Step 6: Final answer
    x = 1,779.00

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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.