Home / 3,128.73-4,689.04-1,277.73

Finding the Fourth Proportional to 3,128.73, 4,689.04 and 1,277.73

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Solution

The fourth proportional to 3,128.73, 4,689.04 and 1,277.73 is: 1,914.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.73 : 4,689.04 = 1,277.73 : x
  2. Step 2: Convert to fraction form
    3,128.73/4,689.04 = 1,277.73/x
  3. Step 3: Cross multiply
    3,128.73x = 4,689.04 × 1,277.73
  4. Step 4: Simplify right side
    3,128.73x = 5,991,327.08
  5. Step 5: Solve for x
    x = 5,991,327.08/3,128.73
  6. Step 6: Final answer
    x = 1,914.94

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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.