Home / 3,608.10-4,979.61-2,115.81

Finding the Fourth Proportional to 3,608.10, 4,979.61 and 2,115.81

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Solution

The fourth proportional to 3,608.10, 4,979.61 and 2,115.81 is: 2,920.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,608.10 : 4,979.61 = 2,115.81 : x
  2. Step 2: Convert to fraction form
    3,608.10/4,979.61 = 2,115.81/x
  3. Step 3: Cross multiply
    3,608.10x = 4,979.61 × 2,115.81
  4. Step 4: Simplify right side
    3,608.10x = 10,535,908.63
  5. Step 5: Solve for x
    x = 10,535,908.63/3,608.10
  6. Step 6: Final answer
    x = 2,920.07

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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.