Home / 6,480.38-9,718.50-2,781.62

Finding the Fourth Proportional to 6,480.38, 9,718.50 and 2,781.62

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Solution

The fourth proportional to 6,480.38, 9,718.50 and 2,781.62 is: 4,171.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,480.38 : 9,718.50 = 2,781.62 : x
  2. Step 2: Convert to fraction form
    6,480.38/9,718.50 = 2,781.62/x
  3. Step 3: Cross multiply
    6,480.38x = 9,718.50 × 2,781.62
  4. Step 4: Simplify right side
    6,480.38x = 27,033,173.97
  5. Step 5: Solve for x
    x = 27,033,173.97/6,480.38
  6. Step 6: Final answer
    x = 4,171.54

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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.