Home / 3,219.63-4,823.11-2,120.66

Finding the Fourth Proportional to 3,219.63, 4,823.11 and 2,120.66

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Solution

The fourth proportional to 3,219.63, 4,823.11 and 2,120.66 is: 3,176.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,219.63 : 4,823.11 = 2,120.66 : x
  2. Step 2: Convert to fraction form
    3,219.63/4,823.11 = 2,120.66/x
  3. Step 3: Cross multiply
    3,219.63x = 4,823.11 × 2,120.66
  4. Step 4: Simplify right side
    3,219.63x = 10,228,173.07
  5. Step 5: Solve for x
    x = 10,228,173.07/3,219.63
  6. Step 6: Final answer
    x = 3,176.82

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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.