Home / 3,421.73-5,136.14-2,106.43

Finding the Fourth Proportional to 3,421.73, 5,136.14 and 2,106.43

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Solution

The fourth proportional to 3,421.73, 5,136.14 and 2,106.43 is: 3,161.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.73 : 5,136.14 = 2,106.43 : x
  2. Step 2: Convert to fraction form
    3,421.73/5,136.14 = 2,106.43/x
  3. Step 3: Cross multiply
    3,421.73x = 5,136.14 × 2,106.43
  4. Step 4: Simplify right side
    3,421.73x = 10,818,911.81
  5. Step 5: Solve for x
    x = 10,818,911.81/3,421.73
  6. Step 6: Final answer
    x = 3,161.82

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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.