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Finding the Fourth Proportional to 2,720.62, 3,758.25 and 2,619.47

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Solution

The fourth proportional to 2,720.62, 3,758.25 and 2,619.47 is: 3,618.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,720.62 : 3,758.25 = 2,619.47 : x
  2. Step 2: Convert to fraction form
    2,720.62/3,758.25 = 2,619.47/x
  3. Step 3: Cross multiply
    2,720.62x = 3,758.25 × 2,619.47
  4. Step 4: Simplify right side
    2,720.62x = 9,844,627.61
  5. Step 5: Solve for x
    x = 9,844,627.61/2,720.62
  6. Step 6: Final answer
    x = 3,618.52

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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.