Home / 3,138.41-4,704.93-1,288.37

Finding the Fourth Proportional to 3,138.41, 4,704.93 and 1,288.37

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Solution

The fourth proportional to 3,138.41, 4,704.93 and 1,288.37 is: 1,931.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.41 : 4,704.93 = 1,288.37 : x
  2. Step 2: Convert to fraction form
    3,138.41/4,704.93 = 1,288.37/x
  3. Step 3: Cross multiply
    3,138.41x = 4,704.93 × 1,288.37
  4. Step 4: Simplify right side
    3,138.41x = 6,061,660.70
  5. Step 5: Solve for x
    x = 6,061,660.70/3,138.41
  6. Step 6: Final answer
    x = 1,931.45

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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.