Home / 9,327.12-12,871.44-5,135.38

Finding the Fourth Proportional to 9,327.12, 12,871.44 and 5,135.38

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Solution

The fourth proportional to 9,327.12, 12,871.44 and 5,135.38 is: 7,086.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,327.12 : 12,871.44 = 5,135.38 : x
  2. Step 2: Convert to fraction form
    9,327.12/12,871.44 = 5,135.38/x
  3. Step 3: Cross multiply
    9,327.12x = 12,871.44 × 5,135.38
  4. Step 4: Simplify right side
    9,327.12x = 66,099,735.55
  5. Step 5: Solve for x
    x = 66,099,735.55/9,327.12
  6. Step 6: Final answer
    x = 7,086.83

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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.