Home / 2,930.11-4,040.67-2,687

Finding the Fourth Proportional to 2,930.11, 4,040.67 and 2,687

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Solution

The fourth proportional to 2,930.11, 4,040.67 and 2,687 is: 3,705.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,930.11 : 4,040.67 = 2,687 : x
  2. Step 2: Convert to fraction form
    2,930.11/4,040.67 = 2,687/x
  3. Step 3: Cross multiply
    2,930.11x = 4,040.67 × 2,687
  4. Step 4: Simplify right side
    2,930.11x = 10,857,280.29
  5. Step 5: Solve for x
    x = 10,857,280.29/2,930.11
  6. Step 6: Final answer
    x = 3,705.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.