Home / 3,199.78-4,790.31-2,381.68

Finding the Fourth Proportional to 3,199.78, 4,790.31 and 2,381.68

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Solution

The fourth proportional to 3,199.78, 4,790.31 and 2,381.68 is: 3,565.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,199.78 : 4,790.31 = 2,381.68 : x
  2. Step 2: Convert to fraction form
    3,199.78/4,790.31 = 2,381.68/x
  3. Step 3: Cross multiply
    3,199.78x = 4,790.31 × 2,381.68
  4. Step 4: Simplify right side
    3,199.78x = 11,408,985.52
  5. Step 5: Solve for x
    x = 11,408,985.52/3,199.78
  6. Step 6: Final answer
    x = 3,565.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.