Home / 3,621.75-4,998.02-1,965.75

Finding the Fourth Proportional to 3,621.75, 4,998.02 and 1,965.75

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Solution

The fourth proportional to 3,621.75, 4,998.02 and 1,965.75 is: 2,712.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,621.75 : 4,998.02 = 1,965.75 : x
  2. Step 2: Convert to fraction form
    3,621.75/4,998.02 = 1,965.75/x
  3. Step 3: Cross multiply
    3,621.75x = 4,998.02 × 1,965.75
  4. Step 4: Simplify right side
    3,621.75x = 9,824,847.99
  5. Step 5: Solve for x
    x = 9,824,847.99/3,621.75
  6. Step 6: Final answer
    x = 2,712.74

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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.