Home / 2,616.87-3,611.27-1,421.85

Finding the Fourth Proportional to 2,616.87, 3,611.27 and 1,421.85

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Solution

The fourth proportional to 2,616.87, 3,611.27 and 1,421.85 is: 1,962.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,616.87 : 3,611.27 = 1,421.85 : x
  2. Step 2: Convert to fraction form
    2,616.87/3,611.27 = 1,421.85/x
  3. Step 3: Cross multiply
    2,616.87x = 3,611.27 × 1,421.85
  4. Step 4: Simplify right side
    2,616.87x = 5,134,684.25
  5. Step 5: Solve for x
    x = 5,134,684.25/2,616.87
  6. Step 6: Final answer
    x = 1,962.15

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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.