Home / 3,979.09-5,969.32-1,346.61

Finding the Fourth Proportional to 3,979.09, 5,969.32 and 1,346.61

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Solution

The fourth proportional to 3,979.09, 5,969.32 and 1,346.61 is: 2,020.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.09 : 5,969.32 = 1,346.61 : x
  2. Step 2: Convert to fraction form
    3,979.09/5,969.32 = 1,346.61/x
  3. Step 3: Cross multiply
    3,979.09x = 5,969.32 × 1,346.61
  4. Step 4: Simplify right side
    3,979.09x = 8,038,346.01
  5. Step 5: Solve for x
    x = 8,038,346.01/3,979.09
  6. Step 6: Final answer
    x = 2,020.15

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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.