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Finding the Fourth Proportional to 3,680.80, 5,506.80 and 2,384.80

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Solution

The fourth proportional to 3,680.80, 5,506.80 and 2,384.80 is: 3,567.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,680.80 : 5,506.80 = 2,384.80 : x
  2. Step 2: Convert to fraction form
    3,680.80/5,506.80 = 2,384.80/x
  3. Step 3: Cross multiply
    3,680.80x = 5,506.80 × 2,384.80
  4. Step 4: Simplify right side
    3,680.80x = 13,132,616.64
  5. Step 5: Solve for x
    x = 13,132,616.64/3,680.80
  6. Step 6: Final answer
    x = 3,567.87

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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.