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Finding the Fourth Proportional to 3,151.99, 4,728.68 and 960.89

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Solution

The fourth proportional to 3,151.99, 4,728.68 and 960.89 is: 1,441.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,151.99 : 4,728.68 = 960.89 : x
  2. Step 2: Convert to fraction form
    3,151.99/4,728.68 = 960.89/x
  3. Step 3: Cross multiply
    3,151.99x = 4,728.68 × 960.89
  4. Step 4: Simplify right side
    3,151.99x = 4,543,717.68
  5. Step 5: Solve for x
    x = 4,543,717.68/3,151.99
  6. Step 6: Final answer
    x = 1,441.54

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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.