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Finding the Fourth Proportional to 3,289.80, 4,934.70 and 824.62

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Solution

The fourth proportional to 3,289.80, 4,934.70 and 824.62 is: 1,236.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,289.80 : 4,934.70 = 824.62 : x
  2. Step 2: Convert to fraction form
    3,289.80/4,934.70 = 824.62/x
  3. Step 3: Cross multiply
    3,289.80x = 4,934.70 × 824.62
  4. Step 4: Simplify right side
    3,289.80x = 4,069,235.85
  5. Step 5: Solve for x
    x = 4,069,235.85/3,289.80
  6. Step 6: Final answer
    x = 1,236.92

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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.