Home / 2,136.06-3,199.76-1,209.68

Finding the Fourth Proportional to 2,136.06, 3,199.76 and 1,209.68

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Solution

The fourth proportional to 2,136.06, 3,199.76 and 1,209.68 is: 1,812.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,136.06 : 3,199.76 = 1,209.68 : x
  2. Step 2: Convert to fraction form
    2,136.06/3,199.76 = 1,209.68/x
  3. Step 3: Cross multiply
    2,136.06x = 3,199.76 × 1,209.68
  4. Step 4: Simplify right side
    2,136.06x = 3,870,663.63
  5. Step 5: Solve for x
    x = 3,870,663.63/2,136.06
  6. Step 6: Final answer
    x = 1,812.06

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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.