Home / 3,280.91-4,528.41-2,161.99

Finding the Fourth Proportional to 3,280.91, 4,528.41 and 2,161.99

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Solution

The fourth proportional to 3,280.91, 4,528.41 and 2,161.99 is: 2,984.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,280.91 : 4,528.41 = 2,161.99 : x
  2. Step 2: Convert to fraction form
    3,280.91/4,528.41 = 2,161.99/x
  3. Step 3: Cross multiply
    3,280.91x = 4,528.41 × 2,161.99
  4. Step 4: Simplify right side
    3,280.91x = 9,790,374.69
  5. Step 5: Solve for x
    x = 9,790,374.69/3,280.91
  6. Step 6: Final answer
    x = 2,984.05

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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.