Home / 7,127.75-9,836.27-3,983.94

Finding the Fourth Proportional to 7,127.75, 9,836.27 and 3,983.94

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Solution

The fourth proportional to 7,127.75, 9,836.27 and 3,983.94 is: 5,497.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,127.75 : 9,836.27 = 3,983.94 : x
  2. Step 2: Convert to fraction form
    7,127.75/9,836.27 = 3,983.94/x
  3. Step 3: Cross multiply
    7,127.75x = 9,836.27 × 3,983.94
  4. Step 4: Simplify right side
    7,127.75x = 39,187,089.58
  5. Step 5: Solve for x
    x = 39,187,089.58/7,127.75
  6. Step 6: Final answer
    x = 5,497.82

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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.