Home / 7,215.72-10,824.14-2,021.64

Finding the Fourth Proportional to 7,215.72, 10,824.14 and 2,021.64

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Solution

The fourth proportional to 7,215.72, 10,824.14 and 2,021.64 is: 3,032.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,215.72 : 10,824.14 = 2,021.64 : x
  2. Step 2: Convert to fraction form
    7,215.72/10,824.14 = 2,021.64/x
  3. Step 3: Cross multiply
    7,215.72x = 10,824.14 × 2,021.64
  4. Step 4: Simplify right side
    7,215.72x = 21,882,514.39
  5. Step 5: Solve for x
    x = 21,882,514.39/7,215.72
  6. Step 6: Final answer
    x = 3,032.62

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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.