Home / 2,772.57-4,159.46-1,290.69

Finding the Fourth Proportional to 2,772.57, 4,159.46 and 1,290.69

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Solution

The fourth proportional to 2,772.57, 4,159.46 and 1,290.69 is: 1,936.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,772.57 : 4,159.46 = 1,290.69 : x
  2. Step 2: Convert to fraction form
    2,772.57/4,159.46 = 1,290.69/x
  3. Step 3: Cross multiply
    2,772.57x = 4,159.46 × 1,290.69
  4. Step 4: Simplify right side
    2,772.57x = 5,368,566.97
  5. Step 5: Solve for x
    x = 5,368,566.97/2,772.57
  6. Step 6: Final answer
    x = 1,936.31

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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.