Home / 2,431.56-3,355.38-1,908.84

Finding the Fourth Proportional to 2,431.56, 3,355.38 and 1,908.84

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Solution

The fourth proportional to 2,431.56, 3,355.38 and 1,908.84 is: 2,634.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,431.56 : 3,355.38 = 1,908.84 : x
  2. Step 2: Convert to fraction form
    2,431.56/3,355.38 = 1,908.84/x
  3. Step 3: Cross multiply
    2,431.56x = 3,355.38 × 1,908.84
  4. Step 4: Simplify right side
    2,431.56x = 6,404,883.56
  5. Step 5: Solve for x
    x = 6,404,883.56/2,431.56
  6. Step 6: Final answer
    x = 2,634.06

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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.