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Finding the Fourth Proportional to 3,578.95, 4,938.33 and 2,086.93

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Solution

The fourth proportional to 3,578.95, 4,938.33 and 2,086.93 is: 2,879.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,578.95 : 4,938.33 = 2,086.93 : x
  2. Step 2: Convert to fraction form
    3,578.95/4,938.33 = 2,086.93/x
  3. Step 3: Cross multiply
    3,578.95x = 4,938.33 × 2,086.93
  4. Step 4: Simplify right side
    3,578.95x = 10,305,949.03
  5. Step 5: Solve for x
    x = 10,305,949.03/3,578.95
  6. Step 6: Final answer
    x = 2,879.60

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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.