Home / 2,206.63-3,045.09-1,211.90

Finding the Fourth Proportional to 2,206.63, 3,045.09 and 1,211.90

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Solution

The fourth proportional to 2,206.63, 3,045.09 and 1,211.90 is: 1,672.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,206.63 : 3,045.09 = 1,211.90 : x
  2. Step 2: Convert to fraction form
    2,206.63/3,045.09 = 1,211.90/x
  3. Step 3: Cross multiply
    2,206.63x = 3,045.09 × 1,211.90
  4. Step 4: Simplify right side
    2,206.63x = 3,690,344.57
  5. Step 5: Solve for x
    x = 3,690,344.57/2,206.63
  6. Step 6: Final answer
    x = 1,672.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.