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Finding the Fourth Proportional to 3,289.42, 4,934.43 and 949.40

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Solution

The fourth proportional to 3,289.42, 4,934.43 and 949.40 is: 1,424.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,289.42 : 4,934.43 = 949.40 : x
  2. Step 2: Convert to fraction form
    3,289.42/4,934.43 = 949.40/x
  3. Step 3: Cross multiply
    3,289.42x = 4,934.43 × 949.40
  4. Step 4: Simplify right side
    3,289.42x = 4,684,723.17
  5. Step 5: Solve for x
    x = 4,684,723.17/3,289.42
  6. Step 6: Final answer
    x = 1,424.18

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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.