Home / 7,758.64-11,639.77-2,212.06

Finding the Fourth Proportional to 7,758.64, 11,639.77 and 2,212.06

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Solution

The fourth proportional to 7,758.64, 11,639.77 and 2,212.06 is: 3,318.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,758.64 : 11,639.77 = 2,212.06 : x
  2. Step 2: Convert to fraction form
    7,758.64/11,639.77 = 2,212.06/x
  3. Step 3: Cross multiply
    7,758.64x = 11,639.77 × 2,212.06
  4. Step 4: Simplify right side
    7,758.64x = 25,747,856.82
  5. Step 5: Solve for x
    x = 25,747,856.82/7,758.64
  6. Step 6: Final answer
    x = 3,318.61

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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.