Home / 3,315.35-4,972.97-850.15

Finding the Fourth Proportional to 3,315.35, 4,972.97 and 850.15

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Solution

The fourth proportional to 3,315.35, 4,972.97 and 850.15 is: 1,275.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315.35 : 4,972.97 = 850.15 : x
  2. Step 2: Convert to fraction form
    3,315.35/4,972.97 = 850.15/x
  3. Step 3: Cross multiply
    3,315.35x = 4,972.97 × 850.15
  4. Step 4: Simplify right side
    3,315.35x = 4,227,760.14
  5. Step 5: Solve for x
    x = 4,227,760.14/3,315.35
  6. Step 6: Final answer
    x = 1,275.21

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1.5x scale

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.