Home / 7,896.85-11,845.78-2,631.65

Finding the Fourth Proportional to 7,896.85, 11,845.78 and 2,631.65

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Solution

The fourth proportional to 7,896.85, 11,845.78 and 2,631.65 is: 3,947.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,896.85 : 11,845.78 = 2,631.65 : x
  2. Step 2: Convert to fraction form
    7,896.85/11,845.78 = 2,631.65/x
  3. Step 3: Cross multiply
    7,896.85x = 11,845.78 × 2,631.65
  4. Step 4: Simplify right side
    7,896.85x = 31,173,881.13
  5. Step 5: Solve for x
    x = 31,173,881.13/7,896.85
  6. Step 6: Final answer
    x = 3,947.64

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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.