Home / 7,127.77-9,836.34-3,983.96

Finding the Fourth Proportional to 7,127.77, 9,836.34 and 3,983.96

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Solution

The fourth proportional to 7,127.77, 9,836.34 and 3,983.96 is: 5,497.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,127.77 : 9,836.34 = 3,983.96 : x
  2. Step 2: Convert to fraction form
    7,127.77/9,836.34 = 3,983.96/x
  3. Step 3: Cross multiply
    7,127.77x = 9,836.34 × 3,983.96
  4. Step 4: Simplify right side
    7,127.77x = 39,187,516.00
  5. Step 5: Solve for x
    x = 39,187,516.00/7,127.77
  6. Step 6: Final answer
    x = 5,497.86

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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.