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Finding the Fourth Proportional to 3,478.52, 5,217.80 and 1,630.94

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Solution

The fourth proportional to 3,478.52, 5,217.80 and 1,630.94 is: 2,446.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.52 : 5,217.80 = 1,630.94 : x
  2. Step 2: Convert to fraction form
    3,478.52/5,217.80 = 1,630.94/x
  3. Step 3: Cross multiply
    3,478.52x = 5,217.80 × 1,630.94
  4. Step 4: Simplify right side
    3,478.52x = 8,509,884.49
  5. Step 5: Solve for x
    x = 8,509,884.49/3,478.52
  6. Step 6: Final answer
    x = 2,446.41

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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.