Home / 2,772.26-4,159.31-1,311.23

Finding the Fourth Proportional to 2,772.26, 4,159.31 and 1,311.23

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Solution

The fourth proportional to 2,772.26, 4,159.31 and 1,311.23 is: 1,967.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,772.26 : 4,159.31 = 1,311.23 : x
  2. Step 2: Convert to fraction form
    2,772.26/4,159.31 = 1,311.23/x
  3. Step 3: Cross multiply
    2,772.26x = 4,159.31 × 1,311.23
  4. Step 4: Simplify right side
    2,772.26x = 5,453,784.70
  5. Step 5: Solve for x
    x = 5,453,784.70/2,772.26
  6. Step 6: Final answer
    x = 1,967.27

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1.5x scale

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.