Home / 7,127.80-9,834.96-3,983.38

Finding the Fourth Proportional to 7,127.80, 9,834.96 and 3,983.38

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Solution

The fourth proportional to 7,127.80, 9,834.96 and 3,983.38 is: 5,496.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,127.80 : 9,834.96 = 3,983.38 : x
  2. Step 2: Convert to fraction form
    7,127.80/9,834.96 = 3,983.38/x
  3. Step 3: Cross multiply
    7,127.80x = 9,834.96 × 3,983.38
  4. Step 4: Simplify right side
    7,127.80x = 39,176,382.96
  5. Step 5: Solve for x
    x = 39,176,382.96/7,127.80
  6. Step 6: Final answer
    x = 5,496.28

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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.