Home / 2,251.40-3,379.10-1,325.80

Finding the Fourth Proportional to 2,251.40, 3,379.10 and 1,325.80

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Solution

The fourth proportional to 2,251.40, 3,379.10 and 1,325.80 is: 1,989.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,251.40 : 3,379.10 = 1,325.80 : x
  2. Step 2: Convert to fraction form
    2,251.40/3,379.10 = 1,325.80/x
  3. Step 3: Cross multiply
    2,251.40x = 3,379.10 × 1,325.80
  4. Step 4: Simplify right side
    2,251.40x = 4,480,010.78
  5. Step 5: Solve for x
    x = 4,480,010.78/2,251.40
  6. Step 6: Final answer
    x = 1,989.88

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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.