Home / 3,118.57-4,678.39-1,270.96

Finding the Fourth Proportional to 3,118.57, 4,678.39 and 1,270.96

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Solution

The fourth proportional to 3,118.57, 4,678.39 and 1,270.96 is: 1,906.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.57 : 4,678.39 = 1,270.96 : x
  2. Step 2: Convert to fraction form
    3,118.57/4,678.39 = 1,270.96/x
  3. Step 3: Cross multiply
    3,118.57x = 4,678.39 × 1,270.96
  4. Step 4: Simplify right side
    3,118.57x = 5,946,046.55
  5. Step 5: Solve for x
    x = 5,946,046.55/3,118.57
  6. Step 6: Final answer
    x = 1,906.66

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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.