Home / 3,922.76-5,408.98-2,858.65

Finding the Fourth Proportional to 3,922.76, 5,408.98 and 2,858.65

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Solution

The fourth proportional to 3,922.76, 5,408.98 and 2,858.65 is: 3,941.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,922.76 : 5,408.98 = 2,858.65 : x
  2. Step 2: Convert to fraction form
    3,922.76/5,408.98 = 2,858.65/x
  3. Step 3: Cross multiply
    3,922.76x = 5,408.98 × 2,858.65
  4. Step 4: Simplify right side
    3,922.76x = 15,462,372.86
  5. Step 5: Solve for x
    x = 15,462,372.86/3,922.76
  6. Step 6: Final answer
    x = 3,941.71

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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.