Home / 7,127.82-9,836.91-3,983.81

Finding the Fourth Proportional to 7,127.82, 9,836.91 and 3,983.81

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Solution

The fourth proportional to 7,127.82, 9,836.91 and 3,983.81 is: 5,497.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,127.82 : 9,836.91 = 3,983.81 : x
  2. Step 2: Convert to fraction form
    7,127.82/9,836.91 = 3,983.81/x
  3. Step 3: Cross multiply
    7,127.82x = 9,836.91 × 3,983.81
  4. Step 4: Simplify right side
    7,127.82x = 39,188,331.24
  5. Step 5: Solve for x
    x = 39,188,331.24/7,127.82
  6. Step 6: Final answer
    x = 5,497.94

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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.