Home / 3,620-5,428.20-1,769.96

Finding the Fourth Proportional to 3,620, 5,428.20 and 1,769.96

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Solution

The fourth proportional to 3,620, 5,428.20 and 1,769.96 is: 2,654.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620 : 5,428.20 = 1,769.96 : x
  2. Step 2: Convert to fraction form
    3,620/5,428.20 = 1,769.96/x
  3. Step 3: Cross multiply
    3,620x = 5,428.20 × 1,769.96
  4. Step 4: Simplify right side
    3,620x = 9,607,696.87
  5. Step 5: Solve for x
    x = 9,607,696.87/3,620
  6. Step 6: Final answer
    x = 2,654.06

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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.