Home / 2,180.42-3,007.97-1,283.68

Finding the Fourth Proportional to 2,180.42, 3,007.97 and 1,283.68

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Solution

The fourth proportional to 2,180.42, 3,007.97 and 1,283.68 is: 1,770.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,180.42 : 3,007.97 = 1,283.68 : x
  2. Step 2: Convert to fraction form
    2,180.42/3,007.97 = 1,283.68/x
  3. Step 3: Cross multiply
    2,180.42x = 3,007.97 × 1,283.68
  4. Step 4: Simplify right side
    2,180.42x = 3,861,273.08
  5. Step 5: Solve for x
    x = 3,861,273.08/2,180.42
  6. Step 6: Final answer
    x = 1,770.89

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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.