Home / 2,278.56-3,144.24-1,283.64

Finding the Fourth Proportional to 2,278.56, 3,144.24 and 1,283.64

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Solution

The fourth proportional to 2,278.56, 3,144.24 and 1,283.64 is: 1,771.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,278.56 : 3,144.24 = 1,283.64 : x
  2. Step 2: Convert to fraction form
    2,278.56/3,144.24 = 1,283.64/x
  3. Step 3: Cross multiply
    2,278.56x = 3,144.24 × 1,283.64
  4. Step 4: Simplify right side
    2,278.56x = 4,036,072.23
  5. Step 5: Solve for x
    x = 4,036,072.23/2,278.56
  6. Step 6: Final answer
    x = 1,771.33

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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.