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Finding the Fourth Proportional to 3,181.50, 4,771.32 and 960.24

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Solution

The fourth proportional to 3,181.50, 4,771.32 and 960.24 is: 1,440.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,181.50 : 4,771.32 = 960.24 : x
  2. Step 2: Convert to fraction form
    3,181.50/4,771.32 = 960.24/x
  3. Step 3: Cross multiply
    3,181.50x = 4,771.32 × 960.24
  4. Step 4: Simplify right side
    3,181.50x = 4,581,612.32
  5. Step 5: Solve for x
    x = 4,581,612.32/3,181.50
  6. Step 6: Final answer
    x = 1,440.08

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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.