Home / 7,913.36-11,865.33-2,647.09

Finding the Fourth Proportional to 7,913.36, 11,865.33 and 2,647.09

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Solution

The fourth proportional to 7,913.36, 11,865.33 and 2,647.09 is: 3,969.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,913.36 : 11,865.33 = 2,647.09 : x
  2. Step 2: Convert to fraction form
    7,913.36/11,865.33 = 2,647.09/x
  3. Step 3: Cross multiply
    7,913.36x = 11,865.33 × 2,647.09
  4. Step 4: Simplify right side
    7,913.36x = 31,408,611.22
  5. Step 5: Solve for x
    x = 31,408,611.22/7,913.36
  6. Step 6: Final answer
    x = 3,969.06

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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.