Home / 2,278.28-3,144.34-1,283.60

Finding the Fourth Proportional to 2,278.28, 3,144.34 and 1,283.60

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Solution

The fourth proportional to 2,278.28, 3,144.34 and 1,283.60 is: 1,771.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,278.28 : 3,144.34 = 1,283.60 : x
  2. Step 2: Convert to fraction form
    2,278.28/3,144.34 = 1,283.60/x
  3. Step 3: Cross multiply
    2,278.28x = 3,144.34 × 1,283.60
  4. Step 4: Simplify right side
    2,278.28x = 4,036,074.82
  5. Step 5: Solve for x
    x = 4,036,074.82/2,278.28
  6. Step 6: Final answer
    x = 1,771.54

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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.