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Finding the Fourth Proportional to 3,959.65, 5,935.54 and 2,205.45

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Solution

The fourth proportional to 3,959.65, 5,935.54 and 2,205.45 is: 3,305.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,959.65 : 5,935.54 = 2,205.45 : x
  2. Step 2: Convert to fraction form
    3,959.65/5,935.54 = 2,205.45/x
  3. Step 3: Cross multiply
    3,959.65x = 5,935.54 × 2,205.45
  4. Step 4: Simplify right side
    3,959.65x = 13,090,555.11
  5. Step 5: Solve for x
    x = 13,090,555.11/3,959.65
  6. Step 6: Final answer
    x = 3,305.99

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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.