Home / 2,305.43-3,181.94-2,164.76

Finding the Fourth Proportional to 2,305.43, 3,181.94 and 2,164.76

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Solution

The fourth proportional to 2,305.43, 3,181.94 and 2,164.76 is: 2,987.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,305.43 : 3,181.94 = 2,164.76 : x
  2. Step 2: Convert to fraction form
    2,305.43/3,181.94 = 2,164.76/x
  3. Step 3: Cross multiply
    2,305.43x = 3,181.94 × 2,164.76
  4. Step 4: Simplify right side
    2,305.43x = 6,888,125.61
  5. Step 5: Solve for x
    x = 6,888,125.61/2,305.43
  6. Step 6: Final answer
    x = 2,987.78

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Half scale
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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.