Home / 3,428.49-5,142.68-1,119.99

Finding the Fourth Proportional to 3,428.49, 5,142.68 and 1,119.99

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Solution

The fourth proportional to 3,428.49, 5,142.68 and 1,119.99 is: 1,679.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.49 : 5,142.68 = 1,119.99 : x
  2. Step 2: Convert to fraction form
    3,428.49/5,142.68 = 1,119.99/x
  3. Step 3: Cross multiply
    3,428.49x = 5,142.68 × 1,119.99
  4. Step 4: Simplify right side
    3,428.49x = 5,759,744.57
  5. Step 5: Solve for x
    x = 5,759,744.57/3,428.49
  6. Step 6: Final answer
    x = 1,679.97

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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.