Home / 7,485.40-11,219.82-3,100.44

Finding the Fourth Proportional to 7,485.40, 11,219.82 and 3,100.44

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Solution

The fourth proportional to 7,485.40, 11,219.82 and 3,100.44 is: 4,647.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,485.40 : 11,219.82 = 3,100.44 : x
  2. Step 2: Convert to fraction form
    7,485.40/11,219.82 = 3,100.44/x
  3. Step 3: Cross multiply
    7,485.40x = 11,219.82 × 3,100.44
  4. Step 4: Simplify right side
    7,485.40x = 34,786,378.72
  5. Step 5: Solve for x
    x = 34,786,378.72/7,485.40
  6. Step 6: Final answer
    x = 4,647.23

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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.