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Finding the Fourth Proportional to 6,608.69, 9,120.25 and 3,624.65

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Solution

The fourth proportional to 6,608.69, 9,120.25 and 3,624.65 is: 5,002.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,608.69 : 9,120.25 = 3,624.65 : x
  2. Step 2: Convert to fraction form
    6,608.69/9,120.25 = 3,624.65/x
  3. Step 3: Cross multiply
    6,608.69x = 9,120.25 × 3,624.65
  4. Step 4: Simplify right side
    6,608.69x = 33,057,686.90
  5. Step 5: Solve for x
    x = 33,057,686.90/6,608.69
  6. Step 6: Final answer
    x = 5,002.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.