Home / 3,315.22-4,972.84-850.05

Finding the Fourth Proportional to 3,315.22, 4,972.84 and 850.05

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Solution

The fourth proportional to 3,315.22, 4,972.84 and 850.05 is: 1,275.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315.22 : 4,972.84 = 850.05 : x
  2. Step 2: Convert to fraction form
    3,315.22/4,972.84 = 850.05/x
  3. Step 3: Cross multiply
    3,315.22x = 4,972.84 × 850.05
  4. Step 4: Simplify right side
    3,315.22x = 4,227,162.64
  5. Step 5: Solve for x
    x = 4,227,162.64/3,315.22
  6. Step 6: Final answer
    x = 1,275.08

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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.