Home / 2,305.66-3,181.84-1,257.72

Finding the Fourth Proportional to 2,305.66, 3,181.84 and 1,257.72

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Solution

The fourth proportional to 2,305.66, 3,181.84 and 1,257.72 is: 1,735.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,305.66 : 3,181.84 = 1,257.72 : x
  2. Step 2: Convert to fraction form
    2,305.66/3,181.84 = 1,257.72/x
  3. Step 3: Cross multiply
    2,305.66x = 3,181.84 × 1,257.72
  4. Step 4: Simplify right side
    2,305.66x = 4,001,860.66
  5. Step 5: Solve for x
    x = 4,001,860.66/2,305.66
  6. Step 6: Final answer
    x = 1,735.67

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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.