Home / 2,805.12-4,197.60-1,882.80

Finding the Fourth Proportional to 2,805.12, 4,197.60 and 1,882.80

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Solution

The fourth proportional to 2,805.12, 4,197.60 and 1,882.80 is: 2,817.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,805.12 : 4,197.60 = 1,882.80 : x
  2. Step 2: Convert to fraction form
    2,805.12/4,197.60 = 1,882.80/x
  3. Step 3: Cross multiply
    2,805.12x = 4,197.60 × 1,882.80
  4. Step 4: Simplify right side
    2,805.12x = 7,903,241.28
  5. Step 5: Solve for x
    x = 7,903,241.28/2,805.12
  6. Step 6: Final answer
    x = 2,817.43

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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.