Home / 3,428.54-5,143.67-1,868.12

Finding the Fourth Proportional to 3,428.54, 5,143.67 and 1,868.12

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Solution

The fourth proportional to 3,428.54, 5,143.67 and 1,868.12 is: 2,802.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.54 : 5,143.67 = 1,868.12 : x
  2. Step 2: Convert to fraction form
    3,428.54/5,143.67 = 1,868.12/x
  3. Step 3: Cross multiply
    3,428.54x = 5,143.67 × 1,868.12
  4. Step 4: Simplify right side
    3,428.54x = 9,608,992.80
  5. Step 5: Solve for x
    x = 9,608,992.80/3,428.54
  6. Step 6: Final answer
    x = 2,802.65

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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.