Home / 3,212.46-4,818.72-1,021.20

Finding the Fourth Proportional to 3,212.46, 4,818.72 and 1,021.20

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Solution

The fourth proportional to 3,212.46, 4,818.72 and 1,021.20 is: 1,531.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,212.46 : 4,818.72 = 1,021.20 : x
  2. Step 2: Convert to fraction form
    3,212.46/4,818.72 = 1,021.20/x
  3. Step 3: Cross multiply
    3,212.46x = 4,818.72 × 1,021.20
  4. Step 4: Simplify right side
    3,212.46x = 4,920,876.86
  5. Step 5: Solve for x
    x = 4,920,876.86/3,212.46
  6. Step 6: Final answer
    x = 1,531.81

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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.