Home / 7,716.20-11,579.70-4,949.60

Finding the Fourth Proportional to 7,716.20, 11,579.70 and 4,949.60

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Solution

The fourth proportional to 7,716.20, 11,579.70 and 4,949.60 is: 7,427.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,716.20 : 11,579.70 = 4,949.60 : x
  2. Step 2: Convert to fraction form
    7,716.20/11,579.70 = 4,949.60/x
  3. Step 3: Cross multiply
    7,716.20x = 11,579.70 × 4,949.60
  4. Step 4: Simplify right side
    7,716.20x = 57,314,883.12
  5. Step 5: Solve for x
    x = 57,314,883.12/7,716.20
  6. Step 6: Final answer
    x = 7,427.86

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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.