Home / 7,759.39-11,640.89-2,212.81

Finding the Fourth Proportional to 7,759.39, 11,640.89 and 2,212.81

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Solution

The fourth proportional to 7,759.39, 11,640.89 and 2,212.81 is: 3,319.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,759.39 : 11,640.89 = 2,212.81 : x
  2. Step 2: Convert to fraction form
    7,759.39/11,640.89 = 2,212.81/x
  3. Step 3: Cross multiply
    7,759.39x = 11,640.89 × 2,212.81
  4. Step 4: Simplify right side
    7,759.39x = 25,759,054.23
  5. Step 5: Solve for x
    x = 25,759,054.23/7,759.39
  6. Step 6: Final answer
    x = 3,319.73

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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.