Home / 7,120.62-9,826.21-3,933.73

Finding the Fourth Proportional to 7,120.62, 9,826.21 and 3,933.73

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Solution

The fourth proportional to 7,120.62, 9,826.21 and 3,933.73 is: 5,428.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,120.62 : 9,826.21 = 3,933.73 : x
  2. Step 2: Convert to fraction form
    7,120.62/9,826.21 = 3,933.73/x
  3. Step 3: Cross multiply
    7,120.62x = 9,826.21 × 3,933.73
  4. Step 4: Simplify right side
    7,120.62x = 38,653,657.06
  5. Step 5: Solve for x
    x = 38,653,657.06/7,120.62
  6. Step 6: Final answer
    x = 5,428.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.