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Finding the Fourth Proportional to 3,000.28, 4,500.42 and 809.02

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Solution

The fourth proportional to 3,000.28, 4,500.42 and 809.02 is: 1,213.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,000.28 : 4,500.42 = 809.02 : x
  2. Step 2: Convert to fraction form
    3,000.28/4,500.42 = 809.02/x
  3. Step 3: Cross multiply
    3,000.28x = 4,500.42 × 809.02
  4. Step 4: Simplify right side
    3,000.28x = 3,640,929.79
  5. Step 5: Solve for x
    x = 3,640,929.79/3,000.28
  6. Step 6: Final answer
    x = 1,213.53

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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.