Home / 7,659.48-11,489.46-2,112.78

Finding the Fourth Proportional to 7,659.48, 11,489.46 and 2,112.78

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Solution

The fourth proportional to 7,659.48, 11,489.46 and 2,112.78 is: 3,169.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,659.48 : 11,489.46 = 2,112.78 : x
  2. Step 2: Convert to fraction form
    7,659.48/11,489.46 = 2,112.78/x
  3. Step 3: Cross multiply
    7,659.48x = 11,489.46 × 2,112.78
  4. Step 4: Simplify right side
    7,659.48x = 24,274,701.30
  5. Step 5: Solve for x
    x = 24,274,701.30/7,659.48
  6. Step 6: Final answer
    x = 3,169.24

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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.