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Finding the Fourth Proportional to 7,676.60, 11,515.68 and 2,746.64

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Solution

The fourth proportional to 7,676.60, 11,515.68 and 2,746.64 is: 4,120.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,676.60 : 11,515.68 = 2,746.64 : x
  2. Step 2: Convert to fraction form
    7,676.60/11,515.68 = 2,746.64/x
  3. Step 3: Cross multiply
    7,676.60x = 11,515.68 × 2,746.64
  4. Step 4: Simplify right side
    7,676.60x = 31,629,427.32
  5. Step 5: Solve for x
    x = 31,629,427.32/7,676.60
  6. Step 6: Final answer
    x = 4,120.24

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.