Home / 2,305.45-3,181.36-1,257.49

Finding the Fourth Proportional to 2,305.45, 3,181.36 and 1,257.49

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Solution

The fourth proportional to 2,305.45, 3,181.36 and 1,257.49 is: 1,735.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,305.45 : 3,181.36 = 1,257.49 : x
  2. Step 2: Convert to fraction form
    2,305.45/3,181.36 = 1,257.49/x
  3. Step 3: Cross multiply
    2,305.45x = 3,181.36 × 1,257.49
  4. Step 4: Simplify right side
    2,305.45x = 4,000,528.39
  5. Step 5: Solve for x
    x = 4,000,528.39/2,305.45
  6. Step 6: Final answer
    x = 1,735.25

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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.