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Finding the Fourth Proportional to 2,000.72, 3,000.74 and 539.55

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Solution

The fourth proportional to 2,000.72, 3,000.74 and 539.55 is: 809.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,000.72 : 3,000.74 = 539.55 : x
  2. Step 2: Convert to fraction form
    2,000.72/3,000.74 = 539.55/x
  3. Step 3: Cross multiply
    2,000.72x = 3,000.74 × 539.55
  4. Step 4: Simplify right side
    2,000.72x = 1,619,049.27
  5. Step 5: Solve for x
    x = 1,619,049.27/2,000.72
  6. Step 6: Final answer
    x = 809.23

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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.