Home / 3,278.69-4,918.76-1,331.81

Finding the Fourth Proportional to 3,278.69, 4,918.76 and 1,331.81

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Solution

The fourth proportional to 3,278.69, 4,918.76 and 1,331.81 is: 1,998.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,278.69 : 4,918.76 = 1,331.81 : x
  2. Step 2: Convert to fraction form
    3,278.69/4,918.76 = 1,331.81/x
  3. Step 3: Cross multiply
    3,278.69x = 4,918.76 × 1,331.81
  4. Step 4: Simplify right side
    3,278.69x = 6,550,847.10
  5. Step 5: Solve for x
    x = 6,550,847.10/3,278.69
  6. Step 6: Final answer
    x = 1,998.01

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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.