Home / 3,221.10-4,827.60-2,872.80

Finding the Fourth Proportional to 3,221.10, 4,827.60 and 2,872.80

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Solution

The fourth proportional to 3,221.10, 4,827.60 and 2,872.80 is: 4,305.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,221.10 : 4,827.60 = 2,872.80 : x
  2. Step 2: Convert to fraction form
    3,221.10/4,827.60 = 2,872.80/x
  3. Step 3: Cross multiply
    3,221.10x = 4,827.60 × 2,872.80
  4. Step 4: Simplify right side
    3,221.10x = 13,868,729.28
  5. Step 5: Solve for x
    x = 13,868,729.28/3,221.10
  6. Step 6: Final answer
    x = 4,305.59

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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.