Home / 4,127.72-6,189.99-1,661.69

Finding the Fourth Proportional to 4,127.72, 6,189.99 and 1,661.69

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Solution

The fourth proportional to 4,127.72, 6,189.99 and 1,661.69 is: 2,491.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,127.72 : 6,189.99 = 1,661.69 : x
  2. Step 2: Convert to fraction form
    4,127.72/6,189.99 = 1,661.69/x
  3. Step 3: Cross multiply
    4,127.72x = 6,189.99 × 1,661.69
  4. Step 4: Simplify right side
    4,127.72x = 10,285,813.53
  5. Step 5: Solve for x
    x = 10,285,813.53/4,127.72
  6. Step 6: Final answer
    x = 2,491.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.