Home / 7,945.90-11,920.92-3,015.64

Finding the Fourth Proportional to 7,945.90, 11,920.92 and 3,015.64

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Solution

The fourth proportional to 7,945.90, 11,920.92 and 3,015.64 is: 4,524.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,945.90 : 11,920.92 = 3,015.64 : x
  2. Step 2: Convert to fraction form
    7,945.90/11,920.92 = 3,015.64/x
  3. Step 3: Cross multiply
    7,945.90x = 11,920.92 × 3,015.64
  4. Step 4: Simplify right side
    7,945.90x = 35,949,203.19
  5. Step 5: Solve for x
    x = 35,949,203.19/7,945.90
  6. Step 6: Final answer
    x = 4,524.25

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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.