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Finding the Fourth Proportional to 6,628.77, 9,939.51 and 3,114.69

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Solution

The fourth proportional to 6,628.77, 9,939.51 and 3,114.69 is: 4,670.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,628.77 : 9,939.51 = 3,114.69 : x
  2. Step 2: Convert to fraction form
    6,628.77/9,939.51 = 3,114.69/x
  3. Step 3: Cross multiply
    6,628.77x = 9,939.51 × 3,114.69
  4. Step 4: Simplify right side
    6,628.77x = 30,958,455.13
  5. Step 5: Solve for x
    x = 30,958,455.13/6,628.77
  6. Step 6: Final answer
    x = 4,670.32

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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.