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Finding the Fourth Proportional to 3,691.80, 5,532.90 and 2,664.60

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Solution

The fourth proportional to 3,691.80, 5,532.90 and 2,664.60 is: 3,993.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,691.80 : 5,532.90 = 2,664.60 : x
  2. Step 2: Convert to fraction form
    3,691.80/5,532.90 = 2,664.60/x
  3. Step 3: Cross multiply
    3,691.80x = 5,532.90 × 2,664.60
  4. Step 4: Simplify right side
    3,691.80x = 14,742,965.34
  5. Step 5: Solve for x
    x = 14,742,965.34/3,691.80
  6. Step 6: Final answer
    x = 3,993.44

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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.