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Finding the Fourth Proportional to 11,874.78, 17,812.04 and 4,858.56

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Solution

The fourth proportional to 11,874.78, 17,812.04 and 4,858.56 is: 7,287.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,874.78 : 17,812.04 = 4,858.56 : x
  2. Step 2: Convert to fraction form
    11,874.78/17,812.04 = 4,858.56/x
  3. Step 3: Cross multiply
    11,874.78x = 17,812.04 × 4,858.56
  4. Step 4: Simplify right side
    11,874.78x = 86,540,840.77
  5. Step 5: Solve for x
    x = 86,540,840.77/11,874.78
  6. Step 6: Final answer
    x = 7,287.78

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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.