Home / 7,948.80-11,922.39-2,105.46

Finding the Fourth Proportional to 7,948.80, 11,922.39 and 2,105.46

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Solution

The fourth proportional to 7,948.80, 11,922.39 and 2,105.46 is: 3,157.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,948.80 : 11,922.39 = 2,105.46 : x
  2. Step 2: Convert to fraction form
    7,948.80/11,922.39 = 2,105.46/x
  3. Step 3: Cross multiply
    7,948.80x = 11,922.39 × 2,105.46
  4. Step 4: Simplify right side
    7,948.80x = 25,102,115.25
  5. Step 5: Solve for x
    x = 25,102,115.25/7,948.80
  6. Step 6: Final answer
    x = 3,157.98

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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.