Home / 7,719.80-11,578.86-2,173.32

Finding the Fourth Proportional to 7,719.80, 11,578.86 and 2,173.32

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Solution

The fourth proportional to 7,719.80, 11,578.86 and 2,173.32 is: 3,259.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,719.80 : 11,578.86 = 2,173.32 : x
  2. Step 2: Convert to fraction form
    7,719.80/11,578.86 = 2,173.32/x
  3. Step 3: Cross multiply
    7,719.80x = 11,578.86 × 2,173.32
  4. Step 4: Simplify right side
    7,719.80x = 25,164,568.02
  5. Step 5: Solve for x
    x = 25,164,568.02/7,719.80
  6. Step 6: Final answer
    x = 3,259.75

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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.