Home / 2,431.56-3,354.72-1,383.36

Finding the Fourth Proportional to 2,431.56, 3,354.72 and 1,383.36

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Solution

The fourth proportional to 2,431.56, 3,354.72 and 1,383.36 is: 1,908.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,431.56 : 3,354.72 = 1,383.36 : x
  2. Step 2: Convert to fraction form
    2,431.56/3,354.72 = 1,383.36/x
  3. Step 3: Cross multiply
    2,431.56x = 3,354.72 × 1,383.36
  4. Step 4: Simplify right side
    2,431.56x = 4,640,785.46
  5. Step 5: Solve for x
    x = 4,640,785.46/2,431.56
  6. Step 6: Final answer
    x = 1,908.56

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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.