Home / 7,788.72-11,680.29-2,857.26

Finding the Fourth Proportional to 7,788.72, 11,680.29 and 2,857.26

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Solution

The fourth proportional to 7,788.72, 11,680.29 and 2,857.26 is: 4,284.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,788.72 : 11,680.29 = 2,857.26 : x
  2. Step 2: Convert to fraction form
    7,788.72/11,680.29 = 2,857.26/x
  3. Step 3: Cross multiply
    7,788.72x = 11,680.29 × 2,857.26
  4. Step 4: Simplify right side
    7,788.72x = 33,373,625.41
  5. Step 5: Solve for x
    x = 33,373,625.41/7,788.72
  6. Step 6: Final answer
    x = 4,284.87

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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.