Home / 3,986.09-5,980.96-1,521.46

Finding the Fourth Proportional to 3,986.09, 5,980.96 and 1,521.46

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Solution

The fourth proportional to 3,986.09, 5,980.96 and 1,521.46 is: 2,282.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986.09 : 5,980.96 = 1,521.46 : x
  2. Step 2: Convert to fraction form
    3,986.09/5,980.96 = 1,521.46/x
  3. Step 3: Cross multiply
    3,986.09x = 5,980.96 × 1,521.46
  4. Step 4: Simplify right side
    3,986.09x = 9,099,791.40
  5. Step 5: Solve for x
    x = 9,099,791.40/3,986.09
  6. Step 6: Final answer
    x = 2,282.89

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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.