Home / 2,961.78-4,086.78-1,635.24

Finding the Fourth Proportional to 2,961.78, 4,086.78 and 1,635.24

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Solution

The fourth proportional to 2,961.78, 4,086.78 and 1,635.24 is: 2,256.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,961.78 : 4,086.78 = 1,635.24 : x
  2. Step 2: Convert to fraction form
    2,961.78/4,086.78 = 1,635.24/x
  3. Step 3: Cross multiply
    2,961.78x = 4,086.78 × 1,635.24
  4. Step 4: Simplify right side
    2,961.78x = 6,682,866.13
  5. Step 5: Solve for x
    x = 6,682,866.13/2,961.78
  6. Step 6: Final answer
    x = 2,256.37

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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.