Home / 3,220.20-4,827.42-1,271.88

Finding the Fourth Proportional to 3,220.20, 4,827.42 and 1,271.88

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Solution

The fourth proportional to 3,220.20, 4,827.42 and 1,271.88 is: 1,906.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,220.20 : 4,827.42 = 1,271.88 : x
  2. Step 2: Convert to fraction form
    3,220.20/4,827.42 = 1,271.88/x
  3. Step 3: Cross multiply
    3,220.20x = 4,827.42 × 1,271.88
  4. Step 4: Simplify right side
    3,220.20x = 6,139,898.95
  5. Step 5: Solve for x
    x = 6,139,898.95/3,220.20
  6. Step 6: Final answer
    x = 1,906.68

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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.