Home / 2,431.08-3,354.90-1,383.12

Finding the Fourth Proportional to 2,431.08, 3,354.90 and 1,383.12

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Solution

The fourth proportional to 2,431.08, 3,354.90 and 1,383.12 is: 1,908.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,431.08 : 3,354.90 = 1,383.12 : x
  2. Step 2: Convert to fraction form
    2,431.08/3,354.90 = 1,383.12/x
  3. Step 3: Cross multiply
    2,431.08x = 3,354.90 × 1,383.12
  4. Step 4: Simplify right side
    2,431.08x = 4,640,229.29
  5. Step 5: Solve for x
    x = 4,640,229.29/2,431.08
  6. Step 6: Final answer
    x = 1,908.71

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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.