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Finding the Fourth Proportional to 3,154.60, 4,728.90 and 1,179.70

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Solution

The fourth proportional to 3,154.60, 4,728.90 and 1,179.70 is: 1,768.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,154.60 : 4,728.90 = 1,179.70 : x
  2. Step 2: Convert to fraction form
    3,154.60/4,728.90 = 1,179.70/x
  3. Step 3: Cross multiply
    3,154.60x = 4,728.90 × 1,179.70
  4. Step 4: Simplify right side
    3,154.60x = 5,578,683.33
  5. Step 5: Solve for x
    x = 5,578,683.33/3,154.60
  6. Step 6: Final answer
    x = 1,768.43

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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.