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Finding the Fourth Proportional to 3,669.66, 5,506.20 and 1,479.78

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Solution

The fourth proportional to 3,669.66, 5,506.20 and 1,479.78 is: 2,220.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,669.66 : 5,506.20 = 1,479.78 : x
  2. Step 2: Convert to fraction form
    3,669.66/5,506.20 = 1,479.78/x
  3. Step 3: Cross multiply
    3,669.66x = 5,506.20 × 1,479.78
  4. Step 4: Simplify right side
    3,669.66x = 8,147,964.64
  5. Step 5: Solve for x
    x = 8,147,964.64/3,669.66
  6. Step 6: Final answer
    x = 2,220.36

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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.