Home / 4,091.57-6,138.34-1,318.51

Finding the Fourth Proportional to 4,091.57, 6,138.34 and 1,318.51

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Solution

The fourth proportional to 4,091.57, 6,138.34 and 1,318.51 is: 1,978.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,091.57 : 6,138.34 = 1,318.51 : x
  2. Step 2: Convert to fraction form
    4,091.57/6,138.34 = 1,318.51/x
  3. Step 3: Cross multiply
    4,091.57x = 6,138.34 × 1,318.51
  4. Step 4: Simplify right side
    4,091.57x = 8,093,448.98
  5. Step 5: Solve for x
    x = 8,093,448.98/4,091.57
  6. Step 6: Final answer
    x = 1,978.08

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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.