Home / 2,171.11-3,253.55-1,234.80

Finding the Fourth Proportional to 2,171.11, 3,253.55 and 1,234.80

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Solution

The fourth proportional to 2,171.11, 3,253.55 and 1,234.80 is: 1,850.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,171.11 : 3,253.55 = 1,234.80 : x
  2. Step 2: Convert to fraction form
    2,171.11/3,253.55 = 1,234.80/x
  3. Step 3: Cross multiply
    2,171.11x = 3,253.55 × 1,234.80
  4. Step 4: Simplify right side
    2,171.11x = 4,017,483.54
  5. Step 5: Solve for x
    x = 4,017,483.54/2,171.11
  6. Step 6: Final answer
    x = 1,850.43

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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.