Home / 2,820.78-4,229.82-1,177.56

Finding the Fourth Proportional to 2,820.78, 4,229.82 and 1,177.56

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Solution

The fourth proportional to 2,820.78, 4,229.82 and 1,177.56 is: 1,765.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,820.78 : 4,229.82 = 1,177.56 : x
  2. Step 2: Convert to fraction form
    2,820.78/4,229.82 = 1,177.56/x
  3. Step 3: Cross multiply
    2,820.78x = 4,229.82 × 1,177.56
  4. Step 4: Simplify right side
    2,820.78x = 4,980,866.84
  5. Step 5: Solve for x
    x = 4,980,866.84/2,820.78
  6. Step 6: Final answer
    x = 1,765.78

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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.