Home / 7,419.75-11,127.96-2,154.78

Finding the Fourth Proportional to 7,419.75, 11,127.96 and 2,154.78

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Solution

The fourth proportional to 7,419.75, 11,127.96 and 2,154.78 is: 3,231.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,419.75 : 11,127.96 = 2,154.78 : x
  2. Step 2: Convert to fraction form
    7,419.75/11,127.96 = 2,154.78/x
  3. Step 3: Cross multiply
    7,419.75x = 11,127.96 × 2,154.78
  4. Step 4: Simplify right side
    7,419.75x = 23,978,268.29
  5. Step 5: Solve for x
    x = 23,978,268.29/7,419.75
  6. Step 6: Final answer
    x = 3,231.68

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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.