Home / 2,961.90-4,087.67-1,635.80

Finding the Fourth Proportional to 2,961.90, 4,087.67 and 1,635.80

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Solution

The fourth proportional to 2,961.90, 4,087.67 and 1,635.80 is: 2,257.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,961.90 : 4,087.67 = 1,635.80 : x
  2. Step 2: Convert to fraction form
    2,961.90/4,087.67 = 1,635.80/x
  3. Step 3: Cross multiply
    2,961.90x = 4,087.67 × 1,635.80
  4. Step 4: Simplify right side
    2,961.90x = 6,686,581.97
  5. Step 5: Solve for x
    x = 6,686,581.97/2,961.90
  6. Step 6: Final answer
    x = 2,257.53

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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.