Home / 2,860.50-3,949.11-2,160.66

Finding the Fourth Proportional to 2,860.50, 3,949.11 and 2,160.66

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Solution

The fourth proportional to 2,860.50, 3,949.11 and 2,160.66 is: 2,982.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,860.50 : 3,949.11 = 2,160.66 : x
  2. Step 2: Convert to fraction form
    2,860.50/3,949.11 = 2,160.66/x
  3. Step 3: Cross multiply
    2,860.50x = 3,949.11 × 2,160.66
  4. Step 4: Simplify right side
    2,860.50x = 8,532,684.01
  5. Step 5: Solve for x
    x = 8,532,684.01/2,860.50
  6. Step 6: Final answer
    x = 2,982.93

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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.