Home / 4,920.20-6,791.32-3,218.96

Finding the Fourth Proportional to 4,920.20, 6,791.32 and 3,218.96

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Solution

The fourth proportional to 4,920.20, 6,791.32 and 3,218.96 is: 4,443.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,920.20 : 6,791.32 = 3,218.96 : x
  2. Step 2: Convert to fraction form
    4,920.20/6,791.32 = 3,218.96/x
  3. Step 3: Cross multiply
    4,920.20x = 6,791.32 × 3,218.96
  4. Step 4: Simplify right side
    4,920.20x = 21,860,987.43
  5. Step 5: Solve for x
    x = 21,860,987.43/4,920.20
  6. Step 6: Final answer
    x = 4,443.11

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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.