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Finding the Fourth Proportional to 3,670.82, 5,502.97 and 1,912.13

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Solution

The fourth proportional to 3,670.82, 5,502.97 and 1,912.13 is: 2,866.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,670.82 : 5,502.97 = 1,912.13 : x
  2. Step 2: Convert to fraction form
    3,670.82/5,502.97 = 1,912.13/x
  3. Step 3: Cross multiply
    3,670.82x = 5,502.97 × 1,912.13
  4. Step 4: Simplify right side
    3,670.82x = 10,522,394.03
  5. Step 5: Solve for x
    x = 10,522,394.03/3,670.82
  6. Step 6: Final answer
    x = 2,866.50

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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.