Home / 2,273.20-3,136.84-1,278.48

Finding the Fourth Proportional to 2,273.20, 3,136.84 and 1,278.48

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Solution

The fourth proportional to 2,273.20, 3,136.84 and 1,278.48 is: 1,764.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,273.20 : 3,136.84 = 1,278.48 : x
  2. Step 2: Convert to fraction form
    2,273.20/3,136.84 = 1,278.48/x
  3. Step 3: Cross multiply
    2,273.20x = 3,136.84 × 1,278.48
  4. Step 4: Simplify right side
    2,273.20x = 4,010,387.20
  5. Step 5: Solve for x
    x = 4,010,387.20/2,273.20
  6. Step 6: Final answer
    x = 1,764.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.