Home / 7,922.40-11,881.98-2,728.68

Finding the Fourth Proportional to 7,922.40, 11,881.98 and 2,728.68

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Solution

The fourth proportional to 7,922.40, 11,881.98 and 2,728.68 is: 4,092.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,922.40 : 11,881.98 = 2,728.68 : x
  2. Step 2: Convert to fraction form
    7,922.40/11,881.98 = 2,728.68/x
  3. Step 3: Cross multiply
    7,922.40x = 11,881.98 × 2,728.68
  4. Step 4: Simplify right side
    7,922.40x = 32,422,121.19
  5. Step 5: Solve for x
    x = 32,422,121.19/7,922.40
  6. Step 6: Final answer
    x = 4,092.46

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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.