Home / 5,719.20-8,576.88-2,640.80

Finding the Fourth Proportional to 5,719.20, 8,576.88 and 2,640.80

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Solution

The fourth proportional to 5,719.20, 8,576.88 and 2,640.80 is: 3,960.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,719.20 : 8,576.88 = 2,640.80 : x
  2. Step 2: Convert to fraction form
    5,719.20/8,576.88 = 2,640.80/x
  3. Step 3: Cross multiply
    5,719.20x = 8,576.88 × 2,640.80
  4. Step 4: Simplify right side
    5,719.20x = 22,649,824.70
  5. Step 5: Solve for x
    x = 22,649,824.70/5,719.20
  6. Step 6: Final answer
    x = 3,960.31

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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.