Home / 2,136.80-3,204.25-675.70

Finding the Fourth Proportional to 2,136.80, 3,204.25 and 675.70

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Solution

The fourth proportional to 2,136.80, 3,204.25 and 675.70 is: 1,013.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,136.80 : 3,204.25 = 675.70 : x
  2. Step 2: Convert to fraction form
    2,136.80/3,204.25 = 675.70/x
  3. Step 3: Cross multiply
    2,136.80x = 3,204.25 × 675.70
  4. Step 4: Simplify right side
    2,136.80x = 2,165,111.73
  5. Step 5: Solve for x
    x = 2,165,111.73/2,136.80
  6. Step 6: Final answer
    x = 1,013.25

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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.