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Finding the Fourth Proportional to 3,662.80, 5,495.08 and 2,021.20

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Solution

The fourth proportional to 3,662.80, 5,495.08 and 2,021.20 is: 3,032.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,662.80 : 5,495.08 = 2,021.20 : x
  2. Step 2: Convert to fraction form
    3,662.80/5,495.08 = 2,021.20/x
  3. Step 3: Cross multiply
    3,662.80x = 5,495.08 × 2,021.20
  4. Step 4: Simplify right side
    3,662.80x = 11,106,655.70
  5. Step 5: Solve for x
    x = 11,106,655.70/3,662.80
  6. Step 6: Final answer
    x = 3,032.29

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1.5x scale

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.