Home / 3,211.74-4,815.78-1,262.88

Finding the Fourth Proportional to 3,211.74, 4,815.78 and 1,262.88

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Solution

The fourth proportional to 3,211.74, 4,815.78 and 1,262.88 is: 1,893.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.74 : 4,815.78 = 1,262.88 : x
  2. Step 2: Convert to fraction form
    3,211.74/4,815.78 = 1,262.88/x
  3. Step 3: Cross multiply
    3,211.74x = 4,815.78 × 1,262.88
  4. Step 4: Simplify right side
    3,211.74x = 6,081,752.25
  5. Step 5: Solve for x
    x = 6,081,752.25/3,211.74
  6. Step 6: Final answer
    x = 1,893.60

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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.