Home / 2,961.40-4,086.72-1,635.10

Finding the Fourth Proportional to 2,961.40, 4,086.72 and 1,635.10

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Solution

The fourth proportional to 2,961.40, 4,086.72 and 1,635.10 is: 2,256.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,961.40 : 4,086.72 = 1,635.10 : x
  2. Step 2: Convert to fraction form
    2,961.40/4,086.72 = 1,635.10/x
  3. Step 3: Cross multiply
    2,961.40x = 4,086.72 × 1,635.10
  4. Step 4: Simplify right side
    2,961.40x = 6,682,195.87
  5. Step 5: Solve for x
    x = 6,682,195.87/2,961.40
  6. Step 6: Final answer
    x = 2,256.43

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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.