Home / 2,771.20-4,160.85-1,680.13

Finding the Fourth Proportional to 2,771.20, 4,160.85 and 1,680.13

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Solution

The fourth proportional to 2,771.20, 4,160.85 and 1,680.13 is: 2,522.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,771.20 : 4,160.85 = 1,680.13 : x
  2. Step 2: Convert to fraction form
    2,771.20/4,160.85 = 1,680.13/x
  3. Step 3: Cross multiply
    2,771.20x = 4,160.85 × 1,680.13
  4. Step 4: Simplify right side
    2,771.20x = 6,990,768.91
  5. Step 5: Solve for x
    x = 6,990,768.91/2,771.20
  6. Step 6: Final answer
    x = 2,522.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.