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Finding the Fourth Proportional to 3,151.80, 4,727.72 and 960.56

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Solution

The fourth proportional to 3,151.80, 4,727.72 and 960.56 is: 1,440.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,151.80 : 4,727.72 = 960.56 : x
  2. Step 2: Convert to fraction form
    3,151.80/4,727.72 = 960.56/x
  3. Step 3: Cross multiply
    3,151.80x = 4,727.72 × 960.56
  4. Step 4: Simplify right side
    3,151.80x = 4,541,230.28
  5. Step 5: Solve for x
    x = 4,541,230.28/3,151.80
  6. Step 6: Final answer
    x = 1,440.84

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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.