Home / 5,251.44-7,878.96-1,791.12

Finding the Fourth Proportional to 5,251.44, 7,878.96 and 1,791.12

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Solution

The fourth proportional to 5,251.44, 7,878.96 and 1,791.12 is: 2,687.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,251.44 : 7,878.96 = 1,791.12 : x
  2. Step 2: Convert to fraction form
    5,251.44/7,878.96 = 1,791.12/x
  3. Step 3: Cross multiply
    5,251.44x = 7,878.96 × 1,791.12
  4. Step 4: Simplify right side
    5,251.44x = 14,112,162.84
  5. Step 5: Solve for x
    x = 14,112,162.84/5,251.44
  6. Step 6: Final answer
    x = 2,687.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.