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Finding the Fourth Proportional to 6,616.65, 9,928.86 and 2,669.79

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Solution

The fourth proportional to 6,616.65, 9,928.86 and 2,669.79 is: 4,006.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,616.65 : 9,928.86 = 2,669.79 : x
  2. Step 2: Convert to fraction form
    6,616.65/9,928.86 = 2,669.79/x
  3. Step 3: Cross multiply
    6,616.65x = 9,928.86 × 2,669.79
  4. Step 4: Simplify right side
    6,616.65x = 26,507,971.14
  5. Step 5: Solve for x
    x = 26,507,971.14/6,616.65
  6. Step 6: Final answer
    x = 4,006.25

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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.