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Finding the Fourth Proportional to 3,453.93, 5,182.31 and 1,811.55

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Solution

The fourth proportional to 3,453.93, 5,182.31 and 1,811.55 is: 2,718.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,453.93 : 5,182.31 = 1,811.55 : x
  2. Step 2: Convert to fraction form
    3,453.93/5,182.31 = 1,811.55/x
  3. Step 3: Cross multiply
    3,453.93x = 5,182.31 × 1,811.55
  4. Step 4: Simplify right side
    3,453.93x = 9,388,004.62
  5. Step 5: Solve for x
    x = 9,388,004.62/3,453.93
  6. Step 6: Final answer
    x = 2,718.06

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1.5x scale

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.