Home / 3,674.92-5,511.30-1,209.20

Finding the Fourth Proportional to 3,674.92, 5,511.30 and 1,209.20

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Solution

The fourth proportional to 3,674.92, 5,511.30 and 1,209.20 is: 1,813.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,674.92 : 5,511.30 = 1,209.20 : x
  2. Step 2: Convert to fraction form
    3,674.92/5,511.30 = 1,209.20/x
  3. Step 3: Cross multiply
    3,674.92x = 5,511.30 × 1,209.20
  4. Step 4: Simplify right side
    3,674.92x = 6,664,263.96
  5. Step 5: Solve for x
    x = 6,664,263.96/3,674.92
  6. Step 6: Final answer
    x = 1,813.44

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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.