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Finding the Fourth Proportional to 7,309.68, 10,964.62 and 2,115.56

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Solution

The fourth proportional to 7,309.68, 10,964.62 and 2,115.56 is: 3,173.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,309.68 : 10,964.62 = 2,115.56 : x
  2. Step 2: Convert to fraction form
    7,309.68/10,964.62 = 2,115.56/x
  3. Step 3: Cross multiply
    7,309.68x = 10,964.62 × 2,115.56
  4. Step 4: Simplify right side
    7,309.68x = 23,196,311.49
  5. Step 5: Solve for x
    x = 23,196,311.49/7,309.68
  6. Step 6: Final answer
    x = 3,173.37

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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.