Home / 3,179.30-4,769.46-1,618.68

Finding the Fourth Proportional to 3,179.30, 4,769.46 and 1,618.68

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Solution

The fourth proportional to 3,179.30, 4,769.46 and 1,618.68 is: 2,428.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,179.30 : 4,769.46 = 1,618.68 : x
  2. Step 2: Convert to fraction form
    3,179.30/4,769.46 = 1,618.68/x
  3. Step 3: Cross multiply
    3,179.30x = 4,769.46 × 1,618.68
  4. Step 4: Simplify right side
    3,179.30x = 7,720,229.51
  5. Step 5: Solve for x
    x = 7,720,229.51/3,179.30
  6. Step 6: Final answer
    x = 2,428.28

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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.