Home / 2,379.19-3,282.90-1,331.05

Finding the Fourth Proportional to 2,379.19, 3,282.90 and 1,331.05

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Solution

The fourth proportional to 2,379.19, 3,282.90 and 1,331.05 is: 1,836.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,379.19 : 3,282.90 = 1,331.05 : x
  2. Step 2: Convert to fraction form
    2,379.19/3,282.90 = 1,331.05/x
  3. Step 3: Cross multiply
    2,379.19x = 3,282.90 × 1,331.05
  4. Step 4: Simplify right side
    2,379.19x = 4,369,704.05
  5. Step 5: Solve for x
    x = 4,369,704.05/2,379.19
  6. Step 6: Final answer
    x = 1,836.64

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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.