Home / 2,160.26-3,240.40-1,185.83

Finding the Fourth Proportional to 2,160.26, 3,240.40 and 1,185.83

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Solution

The fourth proportional to 2,160.26, 3,240.40 and 1,185.83 is: 1,778.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,160.26 : 3,240.40 = 1,185.83 : x
  2. Step 2: Convert to fraction form
    2,160.26/3,240.40 = 1,185.83/x
  3. Step 3: Cross multiply
    2,160.26x = 3,240.40 × 1,185.83
  4. Step 4: Simplify right side
    2,160.26x = 3,842,563.53
  5. Step 5: Solve for x
    x = 3,842,563.53/2,160.26
  6. Step 6: Final answer
    x = 1,778.75

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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.