Home / 8,177.12-12,249.36-3,788.64

Finding the Fourth Proportional to 8,177.12, 12,249.36 and 3,788.64

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Solution

The fourth proportional to 8,177.12, 12,249.36 and 3,788.64 is: 5,675.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,177.12 : 12,249.36 = 3,788.64 : x
  2. Step 2: Convert to fraction form
    8,177.12/12,249.36 = 3,788.64/x
  3. Step 3: Cross multiply
    8,177.12x = 12,249.36 × 3,788.64
  4. Step 4: Simplify right side
    8,177.12x = 46,408,415.27
  5. Step 5: Solve for x
    x = 46,408,415.27/8,177.12
  6. Step 6: Final answer
    x = 5,675.40

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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.