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Finding the Fourth Proportional to 7,313.70, 10,965.15 and 3,150.30

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Solution

The fourth proportional to 7,313.70, 10,965.15 and 3,150.30 is: 4,723.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,313.70 : 10,965.15 = 3,150.30 : x
  2. Step 2: Convert to fraction form
    7,313.70/10,965.15 = 3,150.30/x
  3. Step 3: Cross multiply
    7,313.70x = 10,965.15 × 3,150.30
  4. Step 4: Simplify right side
    7,313.70x = 34,543,512.05
  5. Step 5: Solve for x
    x = 34,543,512.05/7,313.70
  6. Step 6: Final answer
    x = 4,723.12

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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.