Home / 7,127.89-9,836.41-3,984.07

Finding the Fourth Proportional to 7,127.89, 9,836.41 and 3,984.07

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Solution

The fourth proportional to 7,127.89, 9,836.41 and 3,984.07 is: 5,497.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,127.89 : 9,836.41 = 3,984.07 : x
  2. Step 2: Convert to fraction form
    7,127.89/9,836.41 = 3,984.07/x
  3. Step 3: Cross multiply
    7,127.89x = 9,836.41 × 3,984.07
  4. Step 4: Simplify right side
    7,127.89x = 39,188,945.99
  5. Step 5: Solve for x
    x = 39,188,945.99/7,127.89
  6. Step 6: Final answer
    x = 5,497.97

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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.