Home / 7,412.90-11,119.94-2,147.99

Finding the Fourth Proportional to 7,412.90, 11,119.94 and 2,147.99

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Solution

The fourth proportional to 7,412.90, 11,119.94 and 2,147.99 is: 3,222.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,412.90 : 11,119.94 = 2,147.99 : x
  2. Step 2: Convert to fraction form
    7,412.90/11,119.94 = 2,147.99/x
  3. Step 3: Cross multiply
    7,412.90x = 11,119.94 × 2,147.99
  4. Step 4: Simplify right side
    7,412.90x = 23,885,453.58
  5. Step 5: Solve for x
    x = 23,885,453.58/7,412.90
  6. Step 6: Final answer
    x = 3,222.15

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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.