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Finding the Fourth Proportional to 7,918.99, 11,876.72 and 3,533.65

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Solution

The fourth proportional to 7,918.99, 11,876.72 and 3,533.65 is: 5,299.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,918.99 : 11,876.72 = 3,533.65 : x
  2. Step 2: Convert to fraction form
    7,918.99/11,876.72 = 3,533.65/x
  3. Step 3: Cross multiply
    7,918.99x = 11,876.72 × 3,533.65
  4. Step 4: Simplify right side
    7,918.99x = 41,968,171.63
  5. Step 5: Solve for x
    x = 41,968,171.63/7,918.99
  6. Step 6: Final answer
    x = 5,299.69

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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.