Home / 5,736.91-7,916.61-3,218.79

Finding the Fourth Proportional to 5,736.91, 7,916.61 and 3,218.79

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Solution

The fourth proportional to 5,736.91, 7,916.61 and 3,218.79 is: 4,441.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,736.91 : 7,916.61 = 3,218.79 : x
  2. Step 2: Convert to fraction form
    5,736.91/7,916.61 = 3,218.79/x
  3. Step 3: Cross multiply
    5,736.91x = 7,916.61 × 3,218.79
  4. Step 4: Simplify right side
    5,736.91x = 25,481,887.49
  5. Step 5: Solve for x
    x = 25,481,887.49/5,736.91
  6. Step 6: Final answer
    x = 4,441.75

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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.