Home / 4,815.28-7,222.92-2,221.20

Finding the Fourth Proportional to 4,815.28, 7,222.92 and 2,221.20

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Solution

The fourth proportional to 4,815.28, 7,222.92 and 2,221.20 is: 3,331.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,815.28 : 7,222.92 = 2,221.20 : x
  2. Step 2: Convert to fraction form
    4,815.28/7,222.92 = 2,221.20/x
  3. Step 3: Cross multiply
    4,815.28x = 7,222.92 × 2,221.20
  4. Step 4: Simplify right side
    4,815.28x = 16,043,549.90
  5. Step 5: Solve for x
    x = 16,043,549.90/4,815.28
  6. Step 6: Final answer
    x = 3,331.80

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Similar ratio
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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.