Home / 2,176.20-3,280.95-2,151.72

Finding the Fourth Proportional to 2,176.20, 3,280.95 and 2,151.72

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Solution

The fourth proportional to 2,176.20, 3,280.95 and 2,151.72 is: 3,244.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,176.20 : 3,280.95 = 2,151.72 : x
  2. Step 2: Convert to fraction form
    2,176.20/3,280.95 = 2,151.72/x
  3. Step 3: Cross multiply
    2,176.20x = 3,280.95 × 2,151.72
  4. Step 4: Simplify right side
    2,176.20x = 7,059,685.73
  5. Step 5: Solve for x
    x = 7,059,685.73/2,176.20
  6. Step 6: Final answer
    x = 3,244.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.