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Finding the Fourth Proportional to 3,152.12, 4,728.72 and 960.80

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Solution

The fourth proportional to 3,152.12, 4,728.72 and 960.80 is: 1,441.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,152.12 : 4,728.72 = 960.80 : x
  2. Step 2: Convert to fraction form
    3,152.12/4,728.72 = 960.80/x
  3. Step 3: Cross multiply
    3,152.12x = 4,728.72 × 960.80
  4. Step 4: Simplify right side
    3,152.12x = 4,543,354.18
  5. Step 5: Solve for x
    x = 4,543,354.18/3,152.12
  6. Step 6: Final answer
    x = 1,441.36

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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.