Home / 7,991.76-11,986.83-2,445.15

Finding the Fourth Proportional to 7,991.76, 11,986.83 and 2,445.15

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Solution

The fourth proportional to 7,991.76, 11,986.83 and 2,445.15 is: 3,667.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,991.76 : 11,986.83 = 2,445.15 : x
  2. Step 2: Convert to fraction form
    7,991.76/11,986.83 = 2,445.15/x
  3. Step 3: Cross multiply
    7,991.76x = 11,986.83 × 2,445.15
  4. Step 4: Simplify right side
    7,991.76x = 29,309,597.37
  5. Step 5: Solve for x
    x = 29,309,597.37/7,991.76
  6. Step 6: Final answer
    x = 3,667.48

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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.