Home / 2,776.80-4,161.56-1,314

Finding the Fourth Proportional to 2,776.80, 4,161.56 and 1,314

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Solution

The fourth proportional to 2,776.80, 4,161.56 and 1,314 is: 1,969.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,776.80 : 4,161.56 = 1,314 : x
  2. Step 2: Convert to fraction form
    2,776.80/4,161.56 = 1,314/x
  3. Step 3: Cross multiply
    2,776.80x = 4,161.56 × 1,314
  4. Step 4: Simplify right side
    2,776.80x = 5,468,289.84
  5. Step 5: Solve for x
    x = 5,468,289.84/2,776.80
  6. Step 6: Final answer
    x = 1,969.28

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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.