Home / 7,940.40-11,909.56-3,008.68

Finding the Fourth Proportional to 7,940.40, 11,909.56 and 3,008.68

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Solution

The fourth proportional to 7,940.40, 11,909.56 and 3,008.68 is: 4,512.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,940.40 : 11,909.56 = 3,008.68 : x
  2. Step 2: Convert to fraction form
    7,940.40/11,909.56 = 3,008.68/x
  3. Step 3: Cross multiply
    7,940.40x = 11,909.56 × 3,008.68
  4. Step 4: Simplify right side
    7,940.40x = 35,832,054.98
  5. Step 5: Solve for x
    x = 35,832,054.98/7,940.40
  6. Step 6: Final answer
    x = 4,512.63

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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.