Home / 1,679.12-2,310.39-1,379.27

Finding the Fourth Proportional to 1,679.12, 2,310.39 and 1,379.27

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Solution

The fourth proportional to 1,679.12, 2,310.39 and 1,379.27 is: 1,897.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,679.12 : 2,310.39 = 1,379.27 : x
  2. Step 2: Convert to fraction form
    1,679.12/2,310.39 = 1,379.27/x
  3. Step 3: Cross multiply
    1,679.12x = 2,310.39 × 1,379.27
  4. Step 4: Simplify right side
    1,679.12x = 3,186,651.62
  5. Step 5: Solve for x
    x = 3,186,651.62/1,679.12
  6. Step 6: Final answer
    x = 1,897.81

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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.