Home / 2,680.20-4,024.34-2,188.80

Finding the Fourth Proportional to 2,680.20, 4,024.34 and 2,188.80

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Solution

The fourth proportional to 2,680.20, 4,024.34 and 2,188.80 is: 3,286.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,680.20 : 4,024.34 = 2,188.80 : x
  2. Step 2: Convert to fraction form
    2,680.20/4,024.34 = 2,188.80/x
  3. Step 3: Cross multiply
    2,680.20x = 4,024.34 × 2,188.80
  4. Step 4: Simplify right side
    2,680.20x = 8,808,475.39
  5. Step 5: Solve for x
    x = 8,808,475.39/2,680.20
  6. Step 6: Final answer
    x = 3,286.50

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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.