Home / 11,790.37-17,681.81-3,891.42

Finding the Fourth Proportional to 11,790.37, 17,681.81 and 3,891.42

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Solution

The fourth proportional to 11,790.37, 17,681.81 and 3,891.42 is: 5,835.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,790.37 : 17,681.81 = 3,891.42 : x
  2. Step 2: Convert to fraction form
    11,790.37/17,681.81 = 3,891.42/x
  3. Step 3: Cross multiply
    11,790.37x = 17,681.81 × 3,891.42
  4. Step 4: Simplify right side
    11,790.37x = 68,807,349.07
  5. Step 5: Solve for x
    x = 68,807,349.07/11,790.37
  6. Step 6: Final answer
    x = 5,835.89

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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.