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Finding the Fourth Proportional to 2,603.44, 3,878.87 and 2,479.60

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Solution

The fourth proportional to 2,603.44, 3,878.87 and 2,479.60 is: 3,694.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,603.44 : 3,878.87 = 2,479.60 : x
  2. Step 2: Convert to fraction form
    2,603.44/3,878.87 = 2,479.60/x
  3. Step 3: Cross multiply
    2,603.44x = 3,878.87 × 2,479.60
  4. Step 4: Simplify right side
    2,603.44x = 9,618,046.05
  5. Step 5: Solve for x
    x = 9,618,046.05/2,603.44
  6. Step 6: Final answer
    x = 3,694.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.