Home / 7,920.62-11,883.61-2,991.68

Finding the Fourth Proportional to 7,920.62, 11,883.61 and 2,991.68

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Solution

The fourth proportional to 7,920.62, 11,883.61 and 2,991.68 is: 4,488.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,920.62 : 11,883.61 = 2,991.68 : x
  2. Step 2: Convert to fraction form
    7,920.62/11,883.61 = 2,991.68/x
  3. Step 3: Cross multiply
    7,920.62x = 11,883.61 × 2,991.68
  4. Step 4: Simplify right side
    7,920.62x = 35,551,958.36
  5. Step 5: Solve for x
    x = 35,551,958.36/7,920.62
  6. Step 6: Final answer
    x = 4,488.53

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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.