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Finding the Fourth Proportional to 3,343.92, 4,981.98 and 3,178.68

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Solution

The fourth proportional to 3,343.92, 4,981.98 and 3,178.68 is: 4,735.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,343.92 : 4,981.98 = 3,178.68 : x
  2. Step 2: Convert to fraction form
    3,343.92/4,981.98 = 3,178.68/x
  3. Step 3: Cross multiply
    3,343.92x = 4,981.98 × 3,178.68
  4. Step 4: Simplify right side
    3,343.92x = 15,836,120.19
  5. Step 5: Solve for x
    x = 15,836,120.19/3,343.92
  6. Step 6: Final answer
    x = 4,735.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.