Home / 3,860.45-5,791.13-1,228.07

Finding the Fourth Proportional to 3,860.45, 5,791.13 and 1,228.07

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Solution

The fourth proportional to 3,860.45, 5,791.13 and 1,228.07 is: 1,842.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,860.45 : 5,791.13 = 1,228.07 : x
  2. Step 2: Convert to fraction form
    3,860.45/5,791.13 = 1,228.07/x
  3. Step 3: Cross multiply
    3,860.45x = 5,791.13 × 1,228.07
  4. Step 4: Simplify right side
    3,860.45x = 7,111,913.02
  5. Step 5: Solve for x
    x = 7,111,913.02/3,860.45
  6. Step 6: Final answer
    x = 1,842.25

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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.