Home / 2,847.46-4,272.38-1,286.39

Finding the Fourth Proportional to 2,847.46, 4,272.38 and 1,286.39

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Solution

The fourth proportional to 2,847.46, 4,272.38 and 1,286.39 is: 1,930.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,847.46 : 4,272.38 = 1,286.39 : x
  2. Step 2: Convert to fraction form
    2,847.46/4,272.38 = 1,286.39/x
  3. Step 3: Cross multiply
    2,847.46x = 4,272.38 × 1,286.39
  4. Step 4: Simplify right side
    2,847.46x = 5,495,946.91
  5. Step 5: Solve for x
    x = 5,495,946.91/2,847.46
  6. Step 6: Final answer
    x = 1,930.12

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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.