Home / 4,091.64-6,138.44-1,318.57

Finding the Fourth Proportional to 4,091.64, 6,138.44 and 1,318.57

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Solution

The fourth proportional to 4,091.64, 6,138.44 and 1,318.57 is: 1,978.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,091.64 : 6,138.44 = 1,318.57 : x
  2. Step 2: Convert to fraction form
    4,091.64/6,138.44 = 1,318.57/x
  3. Step 3: Cross multiply
    4,091.64x = 6,138.44 × 1,318.57
  4. Step 4: Simplify right side
    4,091.64x = 8,093,956.24
  5. Step 5: Solve for x
    x = 8,093,956.24/4,091.64
  6. Step 6: Final answer
    x = 1,978.17

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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.