Home / 2,379.71-3,284.07-1,331.75

Finding the Fourth Proportional to 2,379.71, 3,284.07 and 1,331.75

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Solution

The fourth proportional to 2,379.71, 3,284.07 and 1,331.75 is: 1,837.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,379.71 : 3,284.07 = 1,331.75 : x
  2. Step 2: Convert to fraction form
    2,379.71/3,284.07 = 1,331.75/x
  3. Step 3: Cross multiply
    2,379.71x = 3,284.07 × 1,331.75
  4. Step 4: Simplify right side
    2,379.71x = 4,373,560.22
  5. Step 5: Solve for x
    x = 4,373,560.22/2,379.71
  6. Step 6: Final answer
    x = 1,837.85

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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.