Home / 11,278.80-16,918.56-3,883.68

Finding the Fourth Proportional to 11,278.80, 16,918.56 and 3,883.68

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Solution

The fourth proportional to 11,278.80, 16,918.56 and 3,883.68 is: 5,825.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,278.80 : 16,918.56 = 3,883.68 : x
  2. Step 2: Convert to fraction form
    11,278.80/16,918.56 = 3,883.68/x
  3. Step 3: Cross multiply
    11,278.80x = 16,918.56 × 3,883.68
  4. Step 4: Simplify right side
    11,278.80x = 65,706,273.10
  5. Step 5: Solve for x
    x = 65,706,273.10/11,278.80
  6. Step 6: Final answer
    x = 5,825.64

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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.