Home / 3,859.10-5,791.35-1,669.40

Finding the Fourth Proportional to 3,859.10, 5,791.35 and 1,669.40

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Solution

The fourth proportional to 3,859.10, 5,791.35 and 1,669.40 is: 2,505.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,859.10 : 5,791.35 = 1,669.40 : x
  2. Step 2: Convert to fraction form
    3,859.10/5,791.35 = 1,669.40/x
  3. Step 3: Cross multiply
    3,859.10x = 5,791.35 × 1,669.40
  4. Step 4: Simplify right side
    3,859.10x = 9,668,079.69
  5. Step 5: Solve for x
    x = 9,668,079.69/3,859.10
  6. Step 6: Final answer
    x = 2,505.27

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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.