Home / 7,278.97-10,909.32-3,114.09

Finding the Fourth Proportional to 7,278.97, 10,909.32 and 3,114.09

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Solution

The fourth proportional to 7,278.97, 10,909.32 and 3,114.09 is: 4,667.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,278.97 : 10,909.32 = 3,114.09 : x
  2. Step 2: Convert to fraction form
    7,278.97/10,909.32 = 3,114.09/x
  3. Step 3: Cross multiply
    7,278.97x = 10,909.32 × 3,114.09
  4. Step 4: Simplify right side
    7,278.97x = 33,972,604.32
  5. Step 5: Solve for x
    x = 33,972,604.32/7,278.97
  6. Step 6: Final answer
    x = 4,667.23

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1.5x scale

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.