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Finding the Fourth Proportional to 3,691.80, 5,526.90 and 3,259.80

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Solution

The fourth proportional to 3,691.80, 5,526.90 and 3,259.80 is: 4,880.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,691.80 : 5,526.90 = 3,259.80 : x
  2. Step 2: Convert to fraction form
    3,691.80/5,526.90 = 3,259.80/x
  3. Step 3: Cross multiply
    3,691.80x = 5,526.90 × 3,259.80
  4. Step 4: Simplify right side
    3,691.80x = 18,016,588.62
  5. Step 5: Solve for x
    x = 18,016,588.62/3,691.80
  6. Step 6: Final answer
    x = 4,880.16

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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.