Home / 9,231.25-12,739.13-5,039.50

Finding the Fourth Proportional to 9,231.25, 12,739.13 and 5,039.50

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Solution

The fourth proportional to 9,231.25, 12,739.13 and 5,039.50 is: 6,954.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,231.25 : 12,739.13 = 5,039.50 : x
  2. Step 2: Convert to fraction form
    9,231.25/12,739.13 = 5,039.50/x
  3. Step 3: Cross multiply
    9,231.25x = 12,739.13 × 5,039.50
  4. Step 4: Simplify right side
    9,231.25x = 64,198,845.64
  5. Step 5: Solve for x
    x = 64,198,845.64/9,231.25
  6. Step 6: Final answer
    x = 6,954.51

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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.