Home / 2,428.28-3,639.96-2,136.68

Finding the Fourth Proportional to 2,428.28, 3,639.96 and 2,136.68

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Solution

The fourth proportional to 2,428.28, 3,639.96 and 2,136.68 is: 3,202.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,428.28 : 3,639.96 = 2,136.68 : x
  2. Step 2: Convert to fraction form
    2,428.28/3,639.96 = 2,136.68/x
  3. Step 3: Cross multiply
    2,428.28x = 3,639.96 × 2,136.68
  4. Step 4: Simplify right side
    2,428.28x = 7,777,429.73
  5. Step 5: Solve for x
    x = 7,777,429.73/2,428.28
  6. Step 6: Final answer
    x = 3,202.86

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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.