Home / 7,120.37-9,826.07-3,933.88

Finding the Fourth Proportional to 7,120.37, 9,826.07 and 3,933.88

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Solution

The fourth proportional to 7,120.37, 9,826.07 and 3,933.88 is: 5,428.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,120.37 : 9,826.07 = 3,933.88 : x
  2. Step 2: Convert to fraction form
    7,120.37/9,826.07 = 3,933.88/x
  3. Step 3: Cross multiply
    7,120.37x = 9,826.07 × 3,933.88
  4. Step 4: Simplify right side
    7,120.37x = 38,654,602.35
  5. Step 5: Solve for x
    x = 38,654,602.35/7,120.37
  6. Step 6: Final answer
    x = 5,428.73

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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.