Home / 3,112.09-4,666.92-1,379.50

Finding the Fourth Proportional to 3,112.09, 4,666.92 and 1,379.50

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Solution

The fourth proportional to 3,112.09, 4,666.92 and 1,379.50 is: 2,068.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,112.09 : 4,666.92 = 1,379.50 : x
  2. Step 2: Convert to fraction form
    3,112.09/4,666.92 = 1,379.50/x
  3. Step 3: Cross multiply
    3,112.09x = 4,666.92 × 1,379.50
  4. Step 4: Simplify right side
    3,112.09x = 6,438,016.14
  5. Step 5: Solve for x
    x = 6,438,016.14/3,112.09
  6. Step 6: Final answer
    x = 2,068.71

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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.