Home / 2,616.87-3,611.33-1,438

Finding the Fourth Proportional to 2,616.87, 3,611.33 and 1,438

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Solution

The fourth proportional to 2,616.87, 3,611.33 and 1,438 is: 1,984.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,616.87 : 3,611.33 = 1,438 : x
  2. Step 2: Convert to fraction form
    2,616.87/3,611.33 = 1,438/x
  3. Step 3: Cross multiply
    2,616.87x = 3,611.33 × 1,438
  4. Step 4: Simplify right side
    2,616.87x = 5,193,092.54
  5. Step 5: Solve for x
    x = 5,193,092.54/2,616.87
  6. Step 6: Final answer
    x = 1,984.47

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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.