Home / 3,121.73-4,678.52-1,270.68

Finding the Fourth Proportional to 3,121.73, 4,678.52 and 1,270.68

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Solution

The fourth proportional to 3,121.73, 4,678.52 and 1,270.68 is: 1,904.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.73 : 4,678.52 = 1,270.68 : x
  2. Step 2: Convert to fraction form
    3,121.73/4,678.52 = 1,270.68/x
  3. Step 3: Cross multiply
    3,121.73x = 4,678.52 × 1,270.68
  4. Step 4: Simplify right side
    3,121.73x = 5,944,901.79
  5. Step 5: Solve for x
    x = 5,944,901.79/3,121.73
  6. Step 6: Final answer
    x = 1,904.36

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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.