Home / 3,945.26-5,909.40-1,862.15

Finding the Fourth Proportional to 3,945.26, 5,909.40 and 1,862.15

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Solution

The fourth proportional to 3,945.26, 5,909.40 and 1,862.15 is: 2,789.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945.26 : 5,909.40 = 1,862.15 : x
  2. Step 2: Convert to fraction form
    3,945.26/5,909.40 = 1,862.15/x
  3. Step 3: Cross multiply
    3,945.26x = 5,909.40 × 1,862.15
  4. Step 4: Simplify right side
    3,945.26x = 11,004,159.66
  5. Step 5: Solve for x
    x = 11,004,159.66/3,945.26
  6. Step 6: Final answer
    x = 2,789.21

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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.