Home / 1,914.11-2,639.85-1,616.81

Finding the Fourth Proportional to 1,914.11, 2,639.85 and 1,616.81

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Solution

The fourth proportional to 1,914.11, 2,639.85 and 1,616.81 is: 2,229.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,914.11 : 2,639.85 = 1,616.81 : x
  2. Step 2: Convert to fraction form
    1,914.11/2,639.85 = 1,616.81/x
  3. Step 3: Cross multiply
    1,914.11x = 2,639.85 × 1,616.81
  4. Step 4: Simplify right side
    1,914.11x = 4,268,136.01
  5. Step 5: Solve for x
    x = 4,268,136.01/1,914.11
  6. Step 6: Final answer
    x = 2,229.83

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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.