Home / 7,991.46-11,976.77-4,289.35

Finding the Fourth Proportional to 7,991.46, 11,976.77 and 4,289.35

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Solution

The fourth proportional to 7,991.46, 11,976.77 and 4,289.35 is: 6,428.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,991.46 : 11,976.77 = 4,289.35 : x
  2. Step 2: Convert to fraction form
    7,991.46/11,976.77 = 4,289.35/x
  3. Step 3: Cross multiply
    7,991.46x = 11,976.77 × 4,289.35
  4. Step 4: Simplify right side
    7,991.46x = 51,372,558.40
  5. Step 5: Solve for x
    x = 51,372,558.40/7,991.46
  6. Step 6: Final answer
    x = 6,428.44

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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.