Home / 7,991.77-11,989.38-2,445.50

Finding the Fourth Proportional to 7,991.77, 11,989.38 and 2,445.50

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Solution

The fourth proportional to 7,991.77, 11,989.38 and 2,445.50 is: 3,668.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,991.77 : 11,989.38 = 2,445.50 : x
  2. Step 2: Convert to fraction form
    7,991.77/11,989.38 = 2,445.50/x
  3. Step 3: Cross multiply
    7,991.77x = 11,989.38 × 2,445.50
  4. Step 4: Simplify right side
    7,991.77x = 29,320,028.79
  5. Step 5: Solve for x
    x = 29,320,028.79/7,991.77
  6. Step 6: Final answer
    x = 3,668.78

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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.