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Finding the Fourth Proportional to 3,039.36, 4,559.07 and 959.31

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Solution

The fourth proportional to 3,039.36, 4,559.07 and 959.31 is: 1,438.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,039.36 : 4,559.07 = 959.31 : x
  2. Step 2: Convert to fraction form
    3,039.36/4,559.07 = 959.31/x
  3. Step 3: Cross multiply
    3,039.36x = 4,559.07 × 959.31
  4. Step 4: Simplify right side
    3,039.36x = 4,373,561.44
  5. Step 5: Solve for x
    x = 4,373,561.44/3,039.36
  6. Step 6: Final answer
    x = 1,438.97

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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.