Home / 5,921.80-8,172.28-3,404.43

Finding the Fourth Proportional to 5,921.80, 8,172.28 and 3,404.43

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Solution

The fourth proportional to 5,921.80, 8,172.28 and 3,404.43 is: 4,698.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,921.80 : 8,172.28 = 3,404.43 : x
  2. Step 2: Convert to fraction form
    5,921.80/8,172.28 = 3,404.43/x
  3. Step 3: Cross multiply
    5,921.80x = 8,172.28 × 3,404.43
  4. Step 4: Simplify right side
    5,921.80x = 27,821,954.67
  5. Step 5: Solve for x
    x = 27,821,954.67/5,921.80
  6. Step 6: Final answer
    x = 4,698.23

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1.5x scale

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.