Home / 7,439.76-11,137.84-3,921.48

Finding the Fourth Proportional to 7,439.76, 11,137.84 and 3,921.48

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Solution

The fourth proportional to 7,439.76, 11,137.84 and 3,921.48 is: 5,870.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,439.76 : 11,137.84 = 3,921.48 : x
  2. Step 2: Convert to fraction form
    7,439.76/11,137.84 = 3,921.48/x
  3. Step 3: Cross multiply
    7,439.76x = 11,137.84 × 3,921.48
  4. Step 4: Simplify right side
    7,439.76x = 43,676,816.80
  5. Step 5: Solve for x
    x = 43,676,816.80/7,439.76
  6. Step 6: Final answer
    x = 5,870.73

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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.