Home / 7,719.66-11,578.05-2,171.64

Finding the Fourth Proportional to 7,719.66, 11,578.05 and 2,171.64

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Solution

The fourth proportional to 7,719.66, 11,578.05 and 2,171.64 is: 3,257.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,719.66 : 11,578.05 = 2,171.64 : x
  2. Step 2: Convert to fraction form
    7,719.66/11,578.05 = 2,171.64/x
  3. Step 3: Cross multiply
    7,719.66x = 11,578.05 × 2,171.64
  4. Step 4: Simplify right side
    7,719.66x = 25,143,356.50
  5. Step 5: Solve for x
    x = 25,143,356.50/7,719.66
  6. Step 6: Final answer
    x = 3,257.05

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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.