Home / 5,228-7,215.28-3,020

Finding the Fourth Proportional to 5,228, 7,215.28 and 3,020

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Solution

The fourth proportional to 5,228, 7,215.28 and 3,020 is: 4,167.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,228 : 7,215.28 = 3,020 : x
  2. Step 2: Convert to fraction form
    5,228/7,215.28 = 3,020/x
  3. Step 3: Cross multiply
    5,228x = 7,215.28 × 3,020
  4. Step 4: Simplify right side
    5,228x = 21,790,145.60
  5. Step 5: Solve for x
    x = 21,790,145.60/5,228
  6. Step 6: Final answer
    x = 4,167.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.