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Finding the Fourth Proportional to 3,959.00, 5,938.49 and 1,620.09

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Solution

The fourth proportional to 3,959.00, 5,938.49 and 1,620.09 is: 2,430.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,959.00 : 5,938.49 = 1,620.09 : x
  2. Step 2: Convert to fraction form
    3,959.00/5,938.49 = 1,620.09/x
  3. Step 3: Cross multiply
    3,959.00x = 5,938.49 × 1,620.09
  4. Step 4: Simplify right side
    3,959.00x = 9,620,880.16
  5. Step 5: Solve for x
    x = 9,620,880.16/3,959.00
  6. Step 6: Final answer
    x = 2,430.13

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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.