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Finding the Fourth Proportional to 7,650.63, 11,465.25 and 3,945.08

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Solution

The fourth proportional to 7,650.63, 11,465.25 and 3,945.08 is: 5,912.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,650.63 : 11,465.25 = 3,945.08 : x
  2. Step 2: Convert to fraction form
    7,650.63/11,465.25 = 3,945.08/x
  3. Step 3: Cross multiply
    7,650.63x = 11,465.25 × 3,945.08
  4. Step 4: Simplify right side
    7,650.63x = 45,231,271.14
  5. Step 5: Solve for x
    x = 45,231,271.14/7,650.63
  6. Step 6: Final answer
    x = 5,912.10

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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.