Home / 1,286.46-1,930.77-1,031.58

Finding the Fourth Proportional to 1,286.46, 1,930.77 and 1,031.58

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Solution

The fourth proportional to 1,286.46, 1,930.77 and 1,031.58 is: 1,548.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286.46 : 1,930.77 = 1,031.58 : x
  2. Step 2: Convert to fraction form
    1,286.46/1,930.77 = 1,031.58/x
  3. Step 3: Cross multiply
    1,286.46x = 1,930.77 × 1,031.58
  4. Step 4: Simplify right side
    1,286.46x = 1,991,743.72
  5. Step 5: Solve for x
    x = 1,991,743.72/1,286.46
  6. Step 6: Final answer
    x = 1,548.24

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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.