Home / 7,719.92-11,579.80-2,173.26

Finding the Fourth Proportional to 7,719.92, 11,579.80 and 2,173.26

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Solution

The fourth proportional to 7,719.92, 11,579.80 and 2,173.26 is: 3,259.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,719.92 : 11,579.80 = 2,173.26 : x
  2. Step 2: Convert to fraction form
    7,719.92/11,579.80 = 2,173.26/x
  3. Step 3: Cross multiply
    7,719.92x = 11,579.80 × 2,173.26
  4. Step 4: Simplify right side
    7,719.92x = 25,165,916.15
  5. Step 5: Solve for x
    x = 25,165,916.15/7,719.92
  6. Step 6: Final answer
    x = 3,259.87

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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.