Home / 7,719.48-11,578.30-2,173.28

Finding the Fourth Proportional to 7,719.48, 11,578.30 and 2,173.28

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Solution

The fourth proportional to 7,719.48, 11,578.30 and 2,173.28 is: 3,259.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,719.48 : 11,578.30 = 2,173.28 : x
  2. Step 2: Convert to fraction form
    7,719.48/11,578.30 = 2,173.28/x
  3. Step 3: Cross multiply
    7,719.48x = 11,578.30 × 2,173.28
  4. Step 4: Simplify right side
    7,719.48x = 25,162,887.82
  5. Step 5: Solve for x
    x = 25,162,887.82/7,719.48
  6. Step 6: Final answer
    x = 3,259.66

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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.