Home / 7,322.88-10,984.92-2,128.75

Finding the Fourth Proportional to 7,322.88, 10,984.92 and 2,128.75

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Solution

The fourth proportional to 7,322.88, 10,984.92 and 2,128.75 is: 3,193.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,322.88 : 10,984.92 = 2,128.75 : x
  2. Step 2: Convert to fraction form
    7,322.88/10,984.92 = 2,128.75/x
  3. Step 3: Cross multiply
    7,322.88x = 10,984.92 × 2,128.75
  4. Step 4: Simplify right side
    7,322.88x = 23,384,148.45
  5. Step 5: Solve for x
    x = 23,384,148.45/7,322.88
  6. Step 6: Final answer
    x = 3,193.30

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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.