Home / 3,762.16-5,191.67-2,168.78

Finding the Fourth Proportional to 3,762.16, 5,191.67 and 2,168.78

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Solution

The fourth proportional to 3,762.16, 5,191.67 and 2,168.78 is: 2,992.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,762.16 : 5,191.67 = 2,168.78 : x
  2. Step 2: Convert to fraction form
    3,762.16/5,191.67 = 2,168.78/x
  3. Step 3: Cross multiply
    3,762.16x = 5,191.67 × 2,168.78
  4. Step 4: Simplify right side
    3,762.16x = 11,259,569.53
  5. Step 5: Solve for x
    x = 11,259,569.53/3,762.16
  6. Step 6: Final answer
    x = 2,992.85

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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.