Home / 2,847.20-4,270.80-2,808.80

Finding the Fourth Proportional to 2,847.20, 4,270.80 and 2,808.80

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Solution

The fourth proportional to 2,847.20, 4,270.80 and 2,808.80 is: 4,213.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,847.20 : 4,270.80 = 2,808.80 : x
  2. Step 2: Convert to fraction form
    2,847.20/4,270.80 = 2,808.80/x
  3. Step 3: Cross multiply
    2,847.20x = 4,270.80 × 2,808.80
  4. Step 4: Simplify right side
    2,847.20x = 11,995,823.04
  5. Step 5: Solve for x
    x = 11,995,823.04/2,847.20
  6. Step 6: Final answer
    x = 4,213.20

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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.