Home / 3,982.21-5,495.55-2,281

Finding the Fourth Proportional to 3,982.21, 5,495.55 and 2,281

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Solution

The fourth proportional to 3,982.21, 5,495.55 and 2,281 is: 3,147.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,982.21 : 5,495.55 = 2,281 : x
  2. Step 2: Convert to fraction form
    3,982.21/5,495.55 = 2,281/x
  3. Step 3: Cross multiply
    3,982.21x = 5,495.55 × 2,281
  4. Step 4: Simplify right side
    3,982.21x = 12,535,349.55
  5. Step 5: Solve for x
    x = 12,535,349.55/3,982.21
  6. Step 6: Final answer
    x = 3,147.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.