Home / 7,679.97-11,518.68-2,133.87

Finding the Fourth Proportional to 7,679.97, 11,518.68 and 2,133.87

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Solution

The fourth proportional to 7,679.97, 11,518.68 and 2,133.87 is: 3,200.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,679.97 : 11,518.68 = 2,133.87 : x
  2. Step 2: Convert to fraction form
    7,679.97/11,518.68 = 2,133.87/x
  3. Step 3: Cross multiply
    7,679.97x = 11,518.68 × 2,133.87
  4. Step 4: Simplify right side
    7,679.97x = 24,579,365.69
  5. Step 5: Solve for x
    x = 24,579,365.69/7,679.97
  6. Step 6: Final answer
    x = 3,200.45

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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.