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Finding the Fourth Proportional to 3,243.79, 4,476.87 and 1,899.81

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Solution

The fourth proportional to 3,243.79, 4,476.87 and 1,899.81 is: 2,622.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,243.79 : 4,476.87 = 1,899.81 : x
  2. Step 2: Convert to fraction form
    3,243.79/4,476.87 = 1,899.81/x
  3. Step 3: Cross multiply
    3,243.79x = 4,476.87 × 1,899.81
  4. Step 4: Simplify right side
    3,243.79x = 8,505,202.39
  5. Step 5: Solve for x
    x = 8,505,202.39/3,243.79
  6. Step 6: Final answer
    x = 2,622.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.