Home / 7,127.69-9,836.25-3,983.81

Finding the Fourth Proportional to 7,127.69, 9,836.25 and 3,983.81

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Solution

The fourth proportional to 7,127.69, 9,836.25 and 3,983.81 is: 5,497.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,127.69 : 9,836.25 = 3,983.81 : x
  2. Step 2: Convert to fraction form
    7,127.69/9,836.25 = 3,983.81/x
  3. Step 3: Cross multiply
    7,127.69x = 9,836.25 × 3,983.81
  4. Step 4: Simplify right side
    7,127.69x = 39,185,751.11
  5. Step 5: Solve for x
    x = 39,185,751.11/7,127.69
  6. Step 6: Final answer
    x = 5,497.68

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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.