Home / 3,511.49-5,269.46-1,321.79

Finding the Fourth Proportional to 3,511.49, 5,269.46 and 1,321.79

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Solution

The fourth proportional to 3,511.49, 5,269.46 and 1,321.79 is: 1,983.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,511.49 : 5,269.46 = 1,321.79 : x
  2. Step 2: Convert to fraction form
    3,511.49/5,269.46 = 1,321.79/x
  3. Step 3: Cross multiply
    3,511.49x = 5,269.46 × 1,321.79
  4. Step 4: Simplify right side
    3,511.49x = 6,965,086.58
  5. Step 5: Solve for x
    x = 6,965,086.58/3,511.49
  6. Step 6: Final answer
    x = 1,983.52

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1.5x scale

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.